38 changed files with 452 additions and 1439 deletions
--- a/.swift-version
+++ b/.swift-version
@ -1 +0,0 @@
 5.7
--- a/.travis.yml
+++ b/.travis.yml
@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode11
+osx_image: xcode7.3
 branches:
  only:
  - master
@ -7,18 +7,20 @@ env:
  global:
  - LC_CTYPE=en_US.UTF-8
  - LANG=en_US.UTF-8
-  - IOS_SDK=iphonesimulator13.0
+  - IOS_SDK=iphonesimulator9.3
  - SCHEME_IOS="TableKit"
  - PROJECT_FRAMEWORK="TableKit.xcodeproj"
  matrix:
-  - DESTINATION="OS=10.3.1,name=iPhone 5"        SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
+  - DESTINATION="OS=8.1,name=iPhone 4S"          SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
-  - DESTINATION="OS=11.1,name=iPhone 6"          SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
+  - DESTINATION="OS=8.2,name=iPhone 5"           SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
-  - DESTINATION="OS=12.0,name=iPhone 7 Plus"     SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
+  - DESTINATION="OS=9.0,name=iPhone 6"           SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
-  - DESTINATION="OS=13.0,name=iPhone 11"         SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
+  - DESTINATION="OS=9.1,name=iPhone 6 Plus"      SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
  - DESTINATION="OS=9.2,name=iPhone 6S"          SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
  - DESTINATION="OS=9.3,name=iPhone 6S Plus"     SCHEME="$SCHEME_IOS"     SDK="$IOS_SDK"
 script:
  - set -o pipefail
  - xcodebuild -version
  - xcodebuild -showsdks
-  - xcodebuild -project "$PROJECT_FRAMEWORK" -scheme "$SCHEME" -sdk "$SDK" -destination "$DESTINATION" -configuration Debug ONLY_ACTIVE_ARCH=NO ENABLE_TESTABILITY=YES CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO test
+  - xcodebuild -project "$PROJECT_FRAMEWORK" -scheme "$SCHEME" -sdk "$SDK" -destination "$DESTINATION" -configuration Debug ONLY_ACTIVE_ARCH=NO ENABLE_TESTABILITY=YES test | xcpretty -c;
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -1,55 +0,0 @@
 # Change Log
 All notable changes to this project will be documented in this file.
 ## [2.10.0](https://github.com/maxsokolov/TableKit/releases/tag/2.10.0)
 Released on 2019-09-29.
 - Swift 5.1 support.
 ## [2.9.0](https://github.com/maxsokolov/TableKit/releases/tag/2.9.0)
 Released on 2019-04-04.
 - Swift 5.0 support.
 ## [2.8.0](https://github.com/maxsokolov/TableKit/releases/tag/2.8.0)
 Released on 2018-09-30.
 - Swift 4.2 support.
 ## [2.5.0](https://github.com/maxsokolov/TableKit/releases/tag/2.5.0)
 Released on 2017-09-24.
 - Swift 4.0 support.
 ## [2.3.0](https://github.com/maxsokolov/TableKit/releases/tag/2.3.0)
 Released on 2016-11-16.
 - `shouldUsePrototypeCellHeightCalculation` moved to `TableDirector(tableView: tableView, shouldUsePrototypeCellHeightCalculation: true)`
 - Prototype cell height calculation bugfixes
 ## [2.1.0](https://github.com/maxsokolov/TableKit/releases/tag/2.1.0)
 Released on 2016-10-19.
 - `action` method was deprecated on TableRow. Use `on` instead.
 - Support multiple actions with same type on row.
 - You could now build your own cell height calculating strategy. See [TablePrototypeCellHeightCalculator](Sources/TablePrototypeCellHeightCalculator.swift).
 - Default distance between sections changed to `UITableViewAutomaticDimension`. You can customize it, see [TableSection](Sources/TableSection.swift)
 ## [2.0.0](https://github.com/maxsokolov/TableKit/releases/tag/2.0.0)
 Released on 2016-10-06. Breaking changes in 2.0.0:
 <br/>The signatures of `TableRow` and `TableRowAction` classes were changed from
 ```swift
 let action = TableRowAction<String, StringTableViewCell>(.click) { (data) in
 }
 let row = TableRow<String, StringTableViewCell>(item: "some string", actions: [action])
 ```
 to
 ```swift
 let action = TableRowAction<StringTableViewCell>(.click) { (data) in
 }
 let row = TableRow<StringTableViewCell>(item: "some string", actions: [action])
 ```
 This is the great improvement that comes from the community. Thanks a lot!
 ## [1.3.0](https://github.com/maxsokolov/TableKit/releases/tag/1.3.0)
 Released on 2016-09-04. Swift 3.0 support.
 ## [0.1.0](https://github.com/maxsokolov/TableKit/releases/tag/0.1.0)
 Released on 2015-11-15. Initial release called Tablet.
--- a/Demo/Classes/Application/AppDelegate.swift
+++ b/Demo/Classes/Application/AppDelegate.swift
@ -1,7 +1,15 @@
 //
 //  AppDelegate.swift
 //  TabletDemo
 //
 //  Created by Max Sokolov on 08/11/15.
 //  Copyright © 2015 Tablet. All rights reserved.
 //
 import UIKit
@UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
    var window: UIWindow?
-}
+}
--- a/Demo/Classes/Presentation/Controllers/AutolayoutCellsController.swift
+++ b/Demo/Classes/Presentation/Controllers/AutolayoutCellsController.swift
@ -1,3 +1,11 @@
 //
 //  AutolayoutCellsController.swift
 //  TableKitDemo
 //
 //  Created by Max Sokolov on 18/06/16.
 //  Copyright © 2016 Tablet. All rights reserved.
 //
 import UIKit
 import TableKit
@ -5,66 +13,26 @@ class AutolayoutCellsController: UIViewController {
    @IBOutlet weak var tableView: UITableView! {
        didSet {
-            tableDirector = TableDirector(tableView: tableView, shouldUsePrototypeCellHeightCalculation: true)
+            tableDirector = TableDirector(tableView: tableView)
        }
    }
    var tableDirector: TableDirector!
    func randomString(length: Int) -> String {
        let letters : NSString = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
        let len = UInt32(letters.length)
        var randomString = ""
        for _ in 0 ..< length {
            let rand = arc4random_uniform(len)
            var nextChar = letters.character(at: Int(rand))
            randomString += NSString(characters: &nextChar, length: 1) as String
        }
        return randomString
    }
    func randomInt(min: Int, max:Int) -> Int {
        return min + Int(arc4random_uniform(UInt32(max - min + 1)))
    }
    override func viewDidLoad() {
        super.viewDidLoad()
        title = "Autolayout cells"
-        let header = AutolayoutSectionHeaderView.loadFromNib()
+        let section = TableSection()
        let section = TableSection(headerView: header, footerView: nil)
        section.headerHeight = getViewHeight(view: header, width: UIScreen.main.bounds.width)
        var rows = 0
-        while rows <= 20 {
+        while rows <= 10 {
            rows += 1
-            let row = TableRow<AutolayoutTableViewCell>(item: randomString(length: randomInt(min: 20, max: 100)))
+            let row = TableRow<Void, AutolayoutTableViewCell>(item: ())
            section += row
        }
        tableDirector += section
        navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Clear", style: .done, target: self, action: #selector(clear))
    }
-    
+}
    @objc
    func clear() {
        tableDirector.clear()
        tableDirector.reload()
    }
    func getViewHeight(view: UIView, width: CGFloat) -> CGFloat {
        view.frame = CGRect(x: 0, y: 0, width: width, height: view.frame.size.height)
        view.setNeedsLayout()
        view.layoutIfNeeded()
        return view.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize).height
    }
 }
--- a/Demo/Classes/Presentation/Controllers/MainController.swift
+++ b/Demo/Classes/Presentation/Controllers/MainController.swift
@ -1,3 +1,11 @@
 //
 //  MainController.swift
 //  TabletDemo
 //
 //  Created by Max Sokolov on 16/04/16.
 //  Copyright © 2016 Tablet. All rights reserved.
 //
 import UIKit
 import TableKit
@ -15,30 +23,25 @@ class MainController: UIViewController {
        title = "TableKit"
-        let clickAction = TableRowAction<ConfigurableTableViewCell>(.click) { [weak self] (options) in
+        let clickAction = TableRowAction<String, ConfigurableTableViewCell>(.click) { [weak self] (data) in
-            switch options.indexPath.row {
+            switch data.indexPath.row {
            case 0:
-                self?.performSegue(withIdentifier: "autolayoutcells", sender: nil)
+                self?.performSegueWithIdentifier("autolayoutcells", sender: nil)
            case 1:
-                self?.performSegue(withIdentifier: "nibcells", sender: nil)
+                self?.performSegueWithIdentifier("nibcells", sender: nil)
            default:
                break
            }
        }
-        let printClickAction = TableRowAction<ConfigurableTableViewCell>(.click) { (options) in
+        let rows: [Row] = [
            print("click", options.indexPath)
        }
-        let rows = [
+            TableRow<String, ConfigurableTableViewCell>(item: "Autolayout cells", actions: [clickAction]),
-
+            TableRow<String, ConfigurableTableViewCell>(item: "Nib cells", actions: [clickAction])
            TableRow<ConfigurableTableViewCell>(item: "Autolayout cells", actions: [clickAction, printClickAction]),
            TableRow<ConfigurableTableViewCell>(item: "Nib cells", actions: [clickAction, printClickAction])
        ]
        // automatically creates a section, also could be used like tableDirector.append(rows: rows)
        tableDirector += rows
    }
-}
+}
--- a/Demo/Classes/Presentation/Controllers/NibCellsController.swift
+++ b/Demo/Classes/Presentation/Controllers/NibCellsController.swift
@ -1,3 +1,11 @@
 //
 //  NibCellsController.swift
 //  TableKitDemo
 //
 //  Created by Max Sokolov on 18/06/16.
 //  Copyright © 2016 Tablet. All rights reserved.
 //
 import UIKit
 import TableKit
@ -13,14 +21,13 @@ class NibCellsController: UITableViewController {
        tableDirector = TableDirector(tableView: tableView)
        let numbers = [1000, 2000, 3000, 4000, 5000]
-
+        
-        let rows = numbers.map {
+        let shouldHighlightAction = TableRowAction<Int, NibTableViewCell>(.shouldHighlight) { (_) -> Bool in
-            TableRow<NibTableViewCell>(item: $0)
+            return false
                .on(.shouldHighlight) { (_) -> Bool in
                    return false
                }
        }
        let rows: [Row] = numbers.map { TableRow<Int, NibTableViewCell>(item: $0, actions: [shouldHighlightAction]) }
        tableDirector.append(rows: rows)
    }
-}
+}
--- a/Demo/Classes/Presentation/Views/AutolayoutSectionHeaderView.swift
+++ b/Demo/Classes/Presentation/Views/AutolayoutSectionHeaderView.swift
@ -1,24 +0,0 @@
 import UIKit
 final class AutolayoutSectionHeaderView: UIView {
    @IBOutlet weak var testLabel: UILabel!
    override func awakeFromNib() {
        super.awakeFromNib()
        testLabel.text = "My super super super super super super super super super super super super super super super super super super super long text!"
    }
    static func loadFromNib() -> AutolayoutSectionHeaderView {
        let view = Bundle(for: self)
            .loadNibNamed(
                String(describing: self),
                owner: nil,
                options: nil
            )?.first
        return view as! AutolayoutSectionHeaderView
    }
 }
--- a/Demo/Classes/Presentation/Views/AutolayoutSectionHeaderView.xib
+++ b/Demo/Classes/Presentation/Views/AutolayoutSectionHeaderView.xib
@ -1,39 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="13529" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" colorMatched="YES">
    <device id="retina4_7" orientation="portrait">
        <adaptation id="fullscreen"/>
    </device>
    <dependencies>
        <deployment identifier="iOS"/>
        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13527"/>
        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
    </dependencies>
    <objects>
        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
        <view contentMode="scaleToFill" id="rrg-Sy-26U" customClass="AutolayoutSectionHeaderView" customModule="TableKitDemo" customModuleProvider="target">
            <rect key="frame" x="0.0" y="0.0" width="267" height="68"/>
            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
            <subviews>
                <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="natural" lineBreakMode="wordWrap" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="7al-ia-5Ud">
                    <rect key="frame" x="20" y="24" width="227" height="21"/>
                    <fontDescription key="fontDescription" type="system" pointSize="17"/>
                    <nil key="textColor"/>
                    <nil key="highlightedColor"/>
                </label>
            </subviews>
            <color key="backgroundColor" red="1" green="0.67241452084558406" blue="0.62083349393841014" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
            <constraints>
                <constraint firstAttribute="bottom" secondItem="7al-ia-5Ud" secondAttribute="bottom" constant="23" id="0Wx-eb-Gf8"/>
                <constraint firstAttribute="trailing" secondItem="7al-ia-5Ud" secondAttribute="trailing" constant="20" id="5lG-XV-dd4"/>
                <constraint firstItem="7al-ia-5Ud" firstAttribute="top" secondItem="rrg-Sy-26U" secondAttribute="top" constant="24" id="VBP-29-bA8"/>
                <constraint firstItem="7al-ia-5Ud" firstAttribute="leading" secondItem="rrg-Sy-26U" secondAttribute="leading" constant="20" id="cAb-gb-fpr"/>
            </constraints>
            <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
            <connections>
                <outlet property="testLabel" destination="7al-ia-5Ud" id="sd9-v6-m3z"/>
            </connections>
            <point key="canvasLocation" x="-188.5" y="-277"/>
        </view>
    </objects>
 </document>
--- a/Demo/Classes/Presentation/Views/AutolayoutTableViewCell.swift
+++ b/Demo/Classes/Presentation/Views/AutolayoutTableViewCell.swift
@ -1,31 +1,31 @@
 //
 //  AutolayoutTableViewCell.swift
 //  TabletDemo
 //
 //  Created by Max Sokolov on 24/05/16.
 //  Copyright © 2016 Tablet. All rights reserved.
 //
 import UIKit
 import TableKit
 private let LoremIpsumTitle = "Lorem ipsum dolor sit amet, consectetur adipisicing elit"
 private let LoremIpsumBody = "Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eius adipisci, sed libero. Iste asperiores suscipit, consequatur debitis animi impedit numquam facilis iusto porro labore dolorem, maxime magni incidunt. Delectus, est! Totam at eius excepturi deleniti sed, error repellat itaque omnis maiores tempora ratione dolor velit minus porro aspernatur repudiandae labore quas adipisci esse, nulla tempore voluptatibus cupiditate. Ab provident, atque. Possimus deserunt nisi perferendis, consequuntur odio et aperiam, est, dicta dolor itaque sunt laborum, magni qui optio illum dolore laudantium similique harum. Eveniet quis, libero eligendi delectus repellendus repudiandae ipsum? Vel nam odio dolorem, voluptas sequi minus quo tempore, animi est quia earum maxime. Reiciendis quae repellat, modi non, veniam natus soluta at optio vitae in excepturi minima eveniet dolor."
 class AutolayoutTableViewCell: UITableViewCell, ConfigurableCell {
-    typealias T = String
+    typealias T = Void
    @IBOutlet var titleLabel: UILabel!
    @IBOutlet var subtitleLabel: UILabel!
-
+    
    static var estimatedHeight: CGFloat? {
-        return 150
+        return 500
    }
-
+    
    func configure(with string: T) {
        titleLabel.text = LoremIpsumTitle
-        subtitleLabel.text = string
+        subtitleLabel.text = LoremIpsumBody
    }
-    
+}
    override func layoutSubviews() {
        super.layoutSubviews()
        contentView.layoutIfNeeded()
        titleLabel.preferredMaxLayoutWidth = titleLabel.bounds.size.width
        subtitleLabel.preferredMaxLayoutWidth = subtitleLabel.bounds.size.width
    }
 }
--- a/Demo/Classes/Presentation/Views/ConfigurableTableViewCell.swift
+++ b/Demo/Classes/Presentation/Views/ConfigurableTableViewCell.swift
@ -1,3 +1,11 @@
 //
 //  ConfigurableTableViewCell.swift
 //  TableKitDemo
 //
 //  Created by Max Sokolov on 18/06/16.
 //  Copyright © 2016 Tablet. All rights reserved.
 //
 import UIKit
 import TableKit
@ -5,7 +13,7 @@ class ConfigurableTableViewCell: UITableViewCell, ConfigurableCell {
    func configure(with text: String) {
-        accessoryType = .disclosureIndicator
+        accessoryType = .DisclosureIndicator
        textLabel?.text = text
    }
-}
+}
--- a/Demo/Classes/Presentation/Views/NibTableViewCell.swift
+++ b/Demo/Classes/Presentation/Views/NibTableViewCell.swift
@ -1,3 +1,11 @@
 //
 //  NibTableViewCell.swift
 //  TableKitDemo
 //
 //  Created by Max Sokolov on 18/06/16.
 //  Copyright © 2016 Tablet. All rights reserved.
 //
 import UIKit
 import TableKit
@ -12,4 +20,4 @@ class NibTableViewCell: UITableViewCell, ConfigurableCell {
    func configure(with number: Int) {
        titleLabel.text = "\(number)"
    }
-}
+}
--- a/Demo/Classes/Presentation/Views/NibTableViewCell.xib
+++ b/Demo/Classes/Presentation/Views/NibTableViewCell.xib
@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="10117" systemVersion="15D21" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="10116" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
    <dependencies>
        <deployment identifier="iOS"/>
        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
@ -11,21 +11,19 @@
            <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
            <autoresizingMask key="autoresizingMask"/>
            <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="4JI-V9-Bra" id="Bal-V1-EZ2">
-                <rect key="frame" x="0.0" y="0.0" width="320" height="43.5"/>
+                <rect key="frame" x="0.0" y="0.0" width="320" height="43"/>
                <autoresizingMask key="autoresizingMask"/>
                <subviews>
                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="qBe-iP-Q1p">
-                        <rect key="frame" x="8" y="11" width="304" height="21"/>
+                        <rect key="frame" x="8" y="11" width="45" height="21"/>
                        <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
                        <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
                        <nil key="highlightedColor"/>
                    </label>
                </subviews>
                <constraints>
-                    <constraint firstItem="qBe-iP-Q1p" firstAttribute="top" secondItem="Bal-V1-EZ2" secondAttribute="top" constant="11" id="B84-GR-YoJ"/>
+                    <constraint firstItem="qBe-iP-Q1p" firstAttribute="centerY" secondItem="Bal-V1-EZ2" secondAttribute="centerY" id="8gn-1I-szV"/>
-                    <constraint firstAttribute="bottom" secondItem="qBe-iP-Q1p" secondAttribute="bottom" constant="12" id="Cmh-Tj-2Pw"/>
+                    <constraint firstItem="qBe-iP-Q1p" firstAttribute="leading" secondItem="Bal-V1-EZ2" secondAttribute="leading" constant="8" id="xMK-TB-Bis"/>
                    <constraint firstAttribute="trailing" secondItem="qBe-iP-Q1p" secondAttribute="trailing" constant="8" id="ZJP-9s-4ZM"/>
                    <constraint firstItem="qBe-iP-Q1p" firstAttribute="leading" secondItem="Bal-V1-EZ2" secondAttribute="leading" constant="8" id="wAW-KV-dCJ"/>
                </constraints>
            </tableViewCellContentView>
            <connections>
--- a/Demo/TableKitDemo.xcodeproj/project.pbxproj
+++ b/Demo/TableKitDemo.xcodeproj/project.pbxproj
@ -7,8 +7,6 @@
 	objects = {
 /* Begin PBXBuildFile section */
 		5079ADE31FE1BF1B000CC345 /* AutolayoutSectionHeaderView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5079ADE21FE1BF1B000CC345 /* AutolayoutSectionHeaderView.swift */; };
 		5079ADE61FE1BF65000CC345 /* AutolayoutSectionHeaderView.xib in Resources */ = {isa = PBXBuildFile; fileRef = 5079ADE51FE1BF65000CC345 /* AutolayoutSectionHeaderView.xib */; };
 		DA08A0531CF4E9B500BBF1F8 /* AutolayoutTableViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA08A0521CF4E9B500BBF1F8 /* AutolayoutTableViewCell.swift */; };
 		DA55465D1D1569CC00AA83EE /* AutolayoutCellsController.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA55465C1D1569CC00AA83EE /* AutolayoutCellsController.swift */; };
 		DA5546601D156A4F00AA83EE /* ConfigurableTableViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA55465F1D156A4F00AA83EE /* ConfigurableTableViewCell.swift */; };
@ -63,8 +61,6 @@
 /* End PBXCopyFilesBuildPhase section */
 /* Begin PBXFileReference section */
 		5079ADE21FE1BF1B000CC345 /* AutolayoutSectionHeaderView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AutolayoutSectionHeaderView.swift; sourceTree = "<group>"; };
 		5079ADE51FE1BF65000CC345 /* AutolayoutSectionHeaderView.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = AutolayoutSectionHeaderView.xib; sourceTree = "<group>"; };
 		DA08A0521CF4E9B500BBF1F8 /* AutolayoutTableViewCell.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AutolayoutTableViewCell.swift; sourceTree = "<group>"; };
 		DA55465C1D1569CC00AA83EE /* AutolayoutCellsController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AutolayoutCellsController.swift; sourceTree = "<group>"; };
 		DA55465F1D156A4F00AA83EE /* ConfigurableTableViewCell.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ConfigurableTableViewCell.swift; sourceTree = "<group>"; };
@ -198,8 +194,6 @@
 				DA08A0521CF4E9B500BBF1F8 /* AutolayoutTableViewCell.swift */,
 				DA5546631D15762000AA83EE /* NibTableViewCell.swift */,
 				DA5546651D15765900AA83EE /* NibTableViewCell.xib */,
 				5079ADE21FE1BF1B000CC345 /* AutolayoutSectionHeaderView.swift */,
 				5079ADE51FE1BF65000CC345 /* AutolayoutSectionHeaderView.xib */,
 			);
 			path = Views;
 			sourceTree = "<group>";
@ -233,13 +227,12 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0720;
-				LastUpgradeCheck = 1000;
+				LastUpgradeCheck = 0700;
 				ORGANIZATIONNAME = Tablet;
 				TargetAttributes = {
 					DAB7EB261BEF787300D2AD5E = {
 						CreatedOnToolsVersion = 7.0.1;
 						DevelopmentTeam = Z48R734SJX;
 						LastSwiftMigration = 1000;
 					};
 				};
 			};
@ -248,7 +241,6 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				English,
 				en,
 				Base,
 			);
@ -291,7 +283,6 @@
 			buildActionMask = 2147483647;
 			files = (
 				DAC2D5CF1C9D30A7009E9C19 /* Main.storyboard in Resources */,
 				5079ADE61FE1BF65000CC345 /* AutolayoutSectionHeaderView.xib in Resources */,
 				DA5546661D15765900AA83EE /* NibTableViewCell.xib in Resources */,
 				DAC2D5D01C9D30A7009E9C19 /* LaunchScreen.storyboard in Resources */,
 				DAC2D69C1C9E75E3009E9C19 /* Assets.xcassets in Resources */,
@ -309,7 +300,6 @@
 				DA55465D1D1569CC00AA83EE /* AutolayoutCellsController.swift in Sources */,
 				DA5546681D15771D00AA83EE /* NibCellsController.swift in Sources */,
 				DAC2D5CA1C9D303E009E9C19 /* AppDelegate.swift in Sources */,
 				5079ADE31FE1BF1B000CC345 /* AutolayoutSectionHeaderView.swift in Sources */,
 				DA5546641D15762000AA83EE /* NibTableViewCell.swift in Sources */,
 				DA5546601D156A4F00AA83EE /* ConfigurableTableViewCell.swift in Sources */,
 				DA08A0531CF4E9B500BBF1F8 /* AutolayoutTableViewCell.swift in Sources */,
@ -335,23 +325,13 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
@ -378,7 +358,6 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@ -390,23 +369,13 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
@ -425,8 +394,6 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
 				SWIFT_VERSION = 5.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;
@ -434,34 +401,32 @@
 		DAB7EB3A1BEF787300D2AD5E /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				EMBEDDED_CONTENT_CONTAINS_SWIFT = YES;
 				INFOPLIST_FILE = Resources/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.tablekit.demo;
 				PRODUCT_NAME = TableKitDemo;
 				PROVISIONING_PROFILE = "";
 				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
 		DAB7EB3B1BEF787300D2AD5E /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				EMBEDDED_CONTENT_CONTAINS_SWIFT = YES;
 				INFOPLIST_FILE = Resources/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.tablekit.demo;
 				PRODUCT_NAME = TableKitDemo;
 				PROVISIONING_PROFILE = "";
 				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
--- a/Demo/TableKitDemo.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
+++ b/Demo/TableKitDemo.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@ -1,8 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
 	<key>IDEDidComputeMac32BitWarning</key>
 	<true/>
 </dict>
 </plist>
--- a/Package.swift
+++ b/Package.swift
@ -1,19 +1,5 @@
 // swift-tools-version:5.7
 import PackageDescription
 let package = Package(
-    name: "TableKit",
+    name: "TableKit"
-
+)
    products: [
        .library(
            name: "TableKit",
            targets: ["TableKit"]),
    ],
    targets: [
        .target(
            name: "TableKit",
            path: "Sources")
    ]
 )
--- a/README.md
+++ b/README.md
@ -1,10 +1,10 @@
-# TableKit
+#TableKit
 <p align="left">
 	<a href="https://travis-ci.org/maxsokolov/TableKit"><img src="https://api.travis-ci.org/maxsokolov/TableKit.svg" alt="Build Status" /></a>
-	<a href="https://developer.apple.com/swift"><img src="https://img.shields.io/badge/Swift_5.1-compatible-4BC51D.svg?style=flat" alt="Swift 5.1 compatible" /></a>
+	<a href="https://developer.apple.com/swift"><img src="https://img.shields.io/badge/Swift_2.2-compatible-4BC51D.svg?style=flat" alt="Swift 2.2 compatible" /></a>
 	<a href="https://github.com/Carthage/Carthage"><img src="https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat" alt="Carthage compatible" /></a>
-	<a href="https://cocoapods.org/pods/tablekit"><img src="https://img.shields.io/badge/pod-2.11.0-blue.svg" alt="CocoaPods compatible" /></a>
+	<a href="https://cocoapods.org/pods/tablekit"><img src="https://img.shields.io/badge/pod-1.0.0-blue.svg" alt="CocoaPods compatible" /></a>
 	<img src="https://img.shields.io/badge/platform-iOS-blue.svg?style=flat" alt="Platform iOS" />
 	<a href="https://raw.githubusercontent.com/maxsokolov/tablekit/master/LICENSE"><img src="http://img.shields.io/badge/license-MIT-blue.svg?style=flat" alt="License: MIT" /></a>
 </p>
@ -36,9 +36,9 @@ Create your rows:
 ```swift
 import TableKit
-let row1 = TableRow<StringTableViewCell>(item: "1")
+let row1 = TableRow<String, StringTableViewCell>(item: "1")
-let row2 = TableRow<IntTableViewCell>(item: 2)
+let row2 = TableRow<Int, IntTableViewCell>(item: 2)
-let row3 = TableRow<UserTableViewCell>(item: User(name: "John Doe", rating: 5))
+let row3 = TableRow<User, UserTableViewCell>(item: User(name: "John Doe", rating: 5))
 ```
 Put rows into section:
 ```swift
@ -53,29 +53,29 @@ Done. Your table is ready. Your cells have to conform to `ConfigurableCell` prot
 ```swift
 class StringTableViewCell: UITableViewCell, ConfigurableCell {
-    func configure(with string: String) {
+	func configure(with string: String) {
-        textLabel?.text = string
+		textLabel?.text = string
-    }
+	}
 }
 class UserTableViewCell: UITableViewCell, ConfigurableCell {
-    static var estimatedHeight: CGFloat? {
+	static var estimatedHeight: CGFloat? {
-        return 100
+		return 100
 	}
 	// is not required to be implemented
 	// by default reuse id is equal to cell's class name
 	static var reuseIdentifier: String {
 		return "my id"
    }
-    // is not required to be implemented
+	func configure(with user: User) {
    // by default reuse id is equal to cell's class name
    static var reuseIdentifier: String {
        return "my id"
    }
    func configure(with user: User) {
-        textLabel?.text = user.name
+		textLabel?.text = user.name
-        detailTextLabel?.text = "Rating: \(user.rating)"
+		detailTextLabel?.text = "Rating: \(user.rating)"
-    }
+	}
 }
 ```
 You could have as many rows and sections as you need.
@ -84,27 +84,26 @@ You could have as many rows and sections as you need.
 It nice to have some actions that related to your cells:
 ```swift
-let action = TableRowAction<StringTableViewCell>(.click) { (options) in
+let action = TableRowAction<String, StringTableViewCell>(.click) { (data) in
-    // you could access any useful information that relates to the action
+	// you could access any useful information that relates to the action
-    // options.cell - StringTableViewCell?
+	// data.cell - StringTableViewCell?
-    // options.item - String
+	// data.item - String
-    // options.indexPath - IndexPath
+	// data.indexPath - NSIndexPath
    // options.userInfo - [AnyHashable: Any]?
 }
-let row = TableRow<StringTableViewCell>(item: "some", actions: [action])
+let row = TableRow<String, StringTableViewCell>(item: "some", actions: [action])
 ```
 Or, using nice chaining approach:
 ```swift
-let row = TableRow<StringTableViewCell>(item: "some")
+let row = TableRow<String, StringTableViewCell>(item: "some")
-    .on(.click) { (options) in
+	.action(.click) { (data) in
-    }
+	}
-    .on(.shouldHighlight) { (options) -> Bool in
+	.action(.shouldHighlight) { (data) -> Bool in
-        return false
+		return false
-    }
+	}
 ```
 You could find all available actions [here](Sources/TableRowAction.swift).
@ -119,37 +118,18 @@ struct MyActions {
 class MyTableViewCell: UITableViewCell, ConfigurableCell {
-    @IBAction func myButtonClicked(sender: UIButton) {
+	@IBAction func myButtonClicked(sender: UIButton) {
-        TableCellAction(key: MyActions.ButtonClicked, sender: self).invoke()
+		TableCellAction(key: MyActions.ButtonClicked, sender: self).invoke()
-    }
+	}
 }
 ```
 And handle them accordingly:
 ```swift
-let myAction = TableRowAction<MyTableViewCell>(.custom(MyActions.ButtonClicked)) { (options) in
+let myAction = TableRowAction<Void, MyTableViewCell>(.custom(MyActions.ButtonClicked)) { (data) in
 }
 ```
 ## Multiple actions with same type
 It's also possible to use multiple actions with same type:
 ```swift
 let click1 = TableRowAction<StringTableViewCell>(.click) { (options) in }
 click1.id = "click1" // optional
 let click2 = TableRowAction<StringTableViewCell>(.click) { (options) in }
 click2.id = "click2" // optional
 let row = TableRow<StringTableViewCell>(item: "some", actions: [click1, click2])
 ```
 Could be useful in case if you want to separate your logic somehow. Actions will be invoked in order which they were attached.
 > If you define multiple actions with same type which also return a value, only last return value will be used for table view.
 You could also remove any action by id:
 ```swift
 row.removeAction(forActionId: "action_id")
 ```
 # Advanced
@ -158,31 +138,31 @@ By default TableKit relies on <a href="https://developer.apple.com/library/ios/d
 ```swift
 class StringTableViewCell: UITableViewCell, ConfigurableCell {
-    // ...
+	// ...
-    static var estimatedHeight: CGFloat? {
+	static var estimatedHeight: CGFloat? {
        return 255
    }
 }
 ```
 It's enough for most cases. But you may be not happy with this. So you could use a prototype cell to calculate cells heights. To enable this feature simply use this property:
 ```swift
-let tableDirector = TableDirector(tableView: tableView, shouldUsePrototypeCellHeightCalculation: true)
+tableDirector.shouldUsePrototypeCellHeightCalculation = true
 ```
-It does all dirty work with prototypes for you [behind the scene](Sources/TablePrototypeCellHeightCalculator.swift), so you don't have to worry about anything except of your cell configuration:
+It does all dirty work with prototypes for you [behind the scene](Sources/HeightStrategy.swift), so you don't have to worry about anything except of your cell configuration:
 ```swift
 class ImageTableViewCell: UITableViewCell, ConfigurableCell {
-    func configure(with url: NSURL) {
+	func configure(with url: NSURL) {
-        loadImageAsync(url: url, imageView: imageView)
+		loadImageAsync(url: url, imageView: imageView)
-    }
+	}
-    override func layoutSubviews() {
+	override func layoutSubviews() {
-        super.layoutSubviews()
+		super.layoutSubviews()
-        contentView.layoutIfNeeded()
+		contentView.layoutIfNeeded()
-        multilineLabel.preferredMaxLayoutWidth = multilineLabel.bounds.size.width
+		multilineLabel.preferredMaxLayoutWidth = multilineLabel.bounds.size.width
    }
 }
 ```
@ -193,18 +173,18 @@ It's never been so easy to deal with table views.
 ```swift
 let users = /* some users array */
-let click = TableRowAction<UserTableViewCell>(.click) {
+let click = TableRowAction<String, UserTableViewCell>(.click) {
 }
-let rows = users.filter({ $0.state == .active }).map({ TableRow<UserTableViewCell>(item: $0.name, actions: [click]) })
+let rows: [Row] = users.filter({ $0.state == .active }).map({ TableRow<String, UserTableViewCell>(item: $0.name, actions: [click]) })
 tableDirector += rows
 ```
 Done, your table is ready.
 ## Automatic cell registration
-TableKit can register your cells in a table view automatically. In case if your reusable cell id matches cell's xib name:
+TableKit can register your cells in table view automatically. In case if your reusable cell id mathces cell's xib name:
 ```ruby
 MyTableViewCell.swift
@ -232,13 +212,9 @@ Clone the repo and drag files from `Sources` folder into your Xcode project.
 # Requirements
- iOS 8.0
+- iOS 8.0+
- Xcode 9.0
+- Xcode 7.0+
 # Changelog
 Keep an eye on [changes](CHANGELOG.md).
 # License
-TableKit is available under the MIT license. See LICENSE for details.
+TableKit is available under the MIT license. See LICENSE for details.
--- a/Sources/ConfigurableCell.swift
+++ b/Sources/ConfigurableCell.swift
@ -22,36 +22,34 @@ import UIKit
 public protocol ConfigurableCell {
-    associatedtype CellData
+    associatedtype T
    static var reuseIdentifier: String { get }
    static var estimatedHeight: CGFloat? { get }
    static var defaultHeight: CGFloat? { get }
-    static var layoutType: LayoutType { get }
+    func configure(with _: T)
    func configure(with _: CellData)
 }
 public extension ConfigurableCell where Self: UITableViewCell {
    static var reuseIdentifier: String {
-        return String(describing: self)
+        get {
            return String(self)
        }
    }
    static var estimatedHeight: CGFloat? {
-        return nil
+        get {
            return UITableViewAutomaticDimension
        }
    }
    static var defaultHeight: CGFloat? {
-        return nil
+        get {
            return nil
        }
    }
-
+}
    static var layoutType: LayoutType {
        return .auto
    }
 }
--- a/Sources/Expandable.swift
+++ b/Sources/Expandable.swift
@ -1,96 +0,0 @@
 import UIKit
 public extension TimeInterval {
    static let defaultExpandableAnimationDuration: TimeInterval = 0.3
 }
 public protocol Expandable {
    associatedtype ViewModelType: ExpandableCellViewModel
    var viewModel: ViewModelType? { get }
    func configure(state: ExpandableState)
 }
 extension Expandable where Self: UITableViewCell & ConfigurableCell {
    public func initState() {
        guard let viewModel = viewModel else {
            return
        }
        changeState(expandableState: viewModel.expandableState)
    }
    private func changeState(expandableState: ExpandableState) {
        // layout to get right frames, frame of bottom subview can be used to get expanded height
        setNeedsLayout()
        layoutIfNeeded()
        // apply changes
        configure(state: expandableState)
        layoutIfNeeded()
    }
    public func toggleState(animated: Bool = true,
                            animationDuration: TimeInterval = .defaultExpandableAnimationDuration) {
        guard let viewModel = viewModel,
              let stateIndex = viewModel.availableStates.firstIndex(where: { $0 == viewModel.expandableState }) else {
            return
        }
        let targetState = stateIndex == viewModel.availableStates.count - 1
            ? viewModel.availableStates[0]
            : viewModel.availableStates[stateIndex + 1]
        transition(to: targetState,
                   animated: animated,
                   animationDuration: animationDuration)
    }
    public func transition(to state: ExpandableState,
                           animated: Bool = true,
                           animationDuration: TimeInterval = .defaultExpandableAnimationDuration) {
        guard let tableView = tableView,
              let viewModel = viewModel,
            viewModel.expandableState != state else {
            return
        }
        let contentOffset = tableView.contentOffset
        if animated {
            UIView.animate(withDuration: animationDuration,
                           animations: { [weak self] in
                self?.applyChanges(expandableState: state)
            }, completion: { _ in
                viewModel.expandableState = state
            })
        } else {
            applyChanges(expandableState: state)
            viewModel.expandableState = state
        }
        tableView.beginUpdates()
        tableView.endUpdates()
        tableView.setContentOffset(contentOffset, animated: false)
    }
    public func applyChanges(expandableState: ExpandableState) {
        changeState(expandableState: expandableState)
        if let indexPath = indexPath,
           let tableDirector = (tableView?.delegate as? TableDirector),
           let cellHeightCalculator = tableDirector.rowHeightCalculator as? ExpandableCellHeightCalculator {
            cellHeightCalculator.updateCached(height: expandableState.height ?? height(layoutType: Self.layoutType), for: indexPath)
        }
    }
 }
--- a/Sources/ExpandableCellHeightCalculator.swift
+++ b/Sources/ExpandableCellHeightCalculator.swift
@ -1,55 +0,0 @@
 import UIKit
 public final class ExpandableCellHeightCalculator: RowHeightCalculator {
    private weak var tableView: UITableView?
    private var prototypes = [String: UITableViewCell]()
    private var cachedHeights = [IndexPath: CGFloat]()
    public init(tableView: UITableView?) {
        self.tableView = tableView
    }
    public func updateCached(height: CGFloat, for indexPath: IndexPath) {
        cachedHeights[indexPath] = height
    }
    public func height(forRow row: Row, at indexPath: IndexPath) -> CGFloat {
        guard let tableView = tableView else {
            return 0
        }
        if let height = cachedHeights[indexPath] {
            return height
        }
        var prototypeCell = prototypes[row.reuseIdentifier]
        if prototypeCell == nil {
            prototypeCell = tableView.dequeueReusableCell(withIdentifier: row.reuseIdentifier)
            prototypes[row.reuseIdentifier] = prototypeCell
        }
        guard let cell = prototypeCell else {
            return 0
        }
        row.configure(cell)
        cell.layoutIfNeeded()
        let height = cell.height(layoutType: row.layoutType)
        cachedHeights[indexPath] = height
        return height
    }
    public func estimatedHeight(forRow row: Row, at indexPath: IndexPath) -> CGFloat {
        return height(forRow: row, at: indexPath)
    }
    public func invalidate() {
        cachedHeights.removeAll()
    }
 }
--- a/Sources/ExpandableCellViewModel.swift
+++ b/Sources/ExpandableCellViewModel.swift
@ -1,15 +0,0 @@
 public protocol ExpandableCellViewModel: AnyObject {
    var expandableState: ExpandableState { get set }
    var availableStates: [ExpandableState] { get }
 }
 public extension ExpandableCellViewModel {
    var availableStates: [ExpandableState] {
        return [.collapsed, .expanded]
    }
 }
--- a/Sources/ExpandableState.swift
+++ b/Sources/ExpandableState.swift
@ -1,41 +0,0 @@
 import UIKit
 public enum ExpandableState {
    case collapsed
    case expanded
    case height(value: CGFloat)
 }
 extension ExpandableState: Equatable { }
 extension ExpandableState {
    public var isCollapsed: Bool {
        guard case .collapsed = self else {
            return false
        }
        return true
    }
    public var isExpanded: Bool {
        guard case .expanded = self else {
            return false
        }
        return true
    }
    public var height: CGFloat? {
        guard case let .height(value: height) = self else {
            return nil
        }
        return height
    }
 }
--- a/Sources/TablePrototypeCellHeightCalculator.swift
+++ b/Sources/TablePrototypeCellHeightCalculator.swift
@ -20,18 +20,26 @@
 import UIKit
-open class TablePrototypeCellHeightCalculator: RowHeightCalculator {
+public protocol CellHeightCalculatable {
-    private(set) weak var tableView: UITableView?
+    func height(row: Row, path: NSIndexPath) -> CGFloat
    func estimatedHeight(row: Row, path: NSIndexPath) -> CGFloat
    func invalidate()
 }
 public class PrototypeHeightStrategy: CellHeightCalculatable {
    private weak var tableView: UITableView?
    private var prototypes = [String: UITableViewCell]()
    private var cachedHeights = [Int: CGFloat]()
-    private var separatorHeight = 1 / UIScreen.main.scale
+    private var separatorHeight = 1 / UIScreen.mainScreen().scale
-    public init(tableView: UITableView?) {
+    init(tableView: UITableView?) {
        self.tableView = tableView
    }
-    open func height(forRow row: Row, at indexPath: IndexPath) -> CGFloat {
+    public func height(row: Row, path: NSIndexPath) -> CGFloat {
        guard let tableView = tableView else { return 0 }
@ -41,47 +49,27 @@ open class TablePrototypeCellHeightCalculator: RowHeightCalculator {
            return height
        }
-        var prototypeCell = prototypes[row.reuseIdentifier]
+        guard let cell = tableView.dequeueReusableCellWithIdentifier(row.reuseIdentifier) else { return 0 }
        if prototypeCell == nil {
-            prototypeCell = tableView.dequeueReusableCell(withIdentifier: row.reuseIdentifier)
+        cell.bounds = CGRectMake(0, 0, tableView.bounds.size.width, cell.bounds.height)
            prototypes[row.reuseIdentifier] = prototypeCell
        }
        guard let cell = prototypeCell else { return 0 }
        cell.prepareForReuse()
        row.configure(cell)
-        
+
        cell.bounds = CGRect(x: 0, y: 0, width: tableView.bounds.size.width, height: cell.bounds.height)
        cell.setNeedsLayout()
        cell.layoutIfNeeded()
-        let height = cell.contentView.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize).height + (tableView.separatorStyle != .none ? separatorHeight : 0)
+        let height = cell.contentView.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize).height + (tableView.separatorStyle != .None ? separatorHeight : 0)
        cachedHeights[hash] = height
        return height
    }
-    open func estimatedHeight(forRow row: Row, at indexPath: IndexPath) -> CGFloat {
+    public func estimatedHeight(row: Row, path: NSIndexPath) -> CGFloat {
-
+        return UITableViewAutomaticDimension
        guard let tableView = tableView else { return 0 }
        let hash = row.hashValue ^ Int(tableView.bounds.size.width).hashValue
        if let height = cachedHeights[hash] {
            return height
        }
        if let estimatedHeight = row.estimatedHeight , estimatedHeight > 0 {
            return estimatedHeight
        }
        return UITableView.automaticDimension
    }
-    open func invalidate() {
+    public func invalidate() {
        cachedHeights.removeAll()
    }
-}
+}
--- a/Sources/LayoutType.swift
+++ b/Sources/LayoutType.swift
@ -1,7 +0,0 @@
 public enum LayoutType {
    case manual
    case auto
 }
--- a/Sources/Operators.swift
+++ b/Sources/Operators.swift
@ -43,4 +43,4 @@ public func +=(left: TableSection, right: Row) {
 public func +=(left: TableSection, right: [Row]) {
    left.append(rows: right)
-}
+}
--- a/Sources/TableCellAction.swift
+++ b/Sources/TableCellAction.swift
@ -20,11 +20,15 @@
 import UIKit
 struct TableKitNotifications {
    static let CellAction = "TableKitNotificationsCellAction"
 }
 /**
    A custom action that you can trigger from your cell.
-    You can easily catch actions using a chaining manner with your row.
+    You can eacily catch actions using a chaining manner with your row builder.
 */
-open class TableCellAction {
+public class TableCellAction {
    /// The cell that triggers an action.
    public let cell: UITableViewCell
@ -33,16 +37,16 @@ open class TableCellAction {
    public let key: String
    /// The custom user info.
-    public let userInfo: [AnyHashable: Any]?
+    public let userInfo: [NSObject: AnyObject]?
-    public init(key: String, sender: UITableViewCell, userInfo: [AnyHashable: Any]? = nil) {
+    public init(key: String, sender: UITableViewCell, userInfo: [NSObject: AnyObject]? = nil) {
        self.key = key
        self.cell = sender
        self.userInfo = userInfo
    }
-    open func invoke() {
+    public func invoke() {
-        NotificationCenter.default.post(name: Notification.Name(rawValue: TableKitNotifications.CellAction), object: self, userInfo: userInfo)
+        NSNotificationCenter.defaultCenter().postNotificationName(TableKitNotifications.CellAction, object: self, userInfo: userInfo)
    }
-}
+}
--- a/Sources/TableCellRegisterer.swift
+++ b/Sources/TableCellRegisterer.swift
@ -20,8 +20,8 @@
 import UIKit
-class TableCellRegisterer {
+class TableCellManager {
-
+    
    private var registeredIds = Set<String>()
    private weak var tableView: UITableView?
@ -29,30 +29,30 @@ class TableCellRegisterer {
        self.tableView = tableView
    }
-    func register(cellType: AnyClass, forCellReuseIdentifier reuseIdentifier: String) {
+    func register(cellType cellType: AnyClass, forCellReuseIdentifier reuseIdentifier: String) {
        if registeredIds.contains(reuseIdentifier) {
            return
        }
        // check if cell is already registered, probably cell has been registered by storyboard
-        if tableView?.dequeueReusableCell(withIdentifier: reuseIdentifier) != nil {
+        if tableView?.dequeueReusableCellWithIdentifier(reuseIdentifier) != nil {
            registeredIds.insert(reuseIdentifier)
            return
        }
-        let bundle = Bundle(for: cellType)
+        let bundle = NSBundle(forClass: cellType)
        // we hope that cell's xib file has name that equals to cell's class name
        // in that case we could register nib
-        if let _ = bundle.path(forResource: reuseIdentifier, ofType: "nib") {
+        if let _ = bundle.pathForResource(reuseIdentifier, ofType: "nib") {
-            tableView?.register(UINib(nibName: reuseIdentifier, bundle: bundle), forCellReuseIdentifier: reuseIdentifier)
+            tableView?.registerNib(UINib(nibName: reuseIdentifier, bundle: bundle), forCellReuseIdentifier: reuseIdentifier)
-        // otherwise, register cell class
+            // otherwise, register cell class
        } else {
-            tableView?.register(cellType, forCellReuseIdentifier: reuseIdentifier)
+            tableView?.registerClass(cellType, forCellReuseIdentifier: reuseIdentifier)
        }
        registeredIds.insert(reuseIdentifier)
    }
-}
+}
--- a/Sources/TableDirector.swift
+++ b/Sources/TableDirector.swift
@ -23,177 +23,112 @@ import UIKit
 /**
    Responsible for table view's datasource and delegate.
 */
-open class TableDirector: NSObject, UITableViewDataSource, UITableViewDelegate {
+public class TableDirector: NSObject, UITableViewDataSource, UITableViewDelegate {
-    open private(set) weak var tableView: UITableView?
+    public private(set) weak var tableView: UITableView?
-    open fileprivate(set) var sections = [TableSection]()
+    public private(set) var sections = [TableSection]()
    private weak var scrollDelegate: UIScrollViewDelegate?
-    private var cellRegisterer: TableCellRegisterer?
+    private var heightStrategy: CellHeightCalculatable?
-    public private(set) var rowHeightCalculator: RowHeightCalculator?
+    private var cellManager: TableCellManager?
    private var sectionsIndexTitlesIndexes: [Int]?
-    @available(*, deprecated, message: "Produced incorrect behaviour")
+    public var shouldUsePrototypeCellHeightCalculation: Bool = false {
    open var shouldUsePrototypeCellHeightCalculation: Bool = false {
        didSet {
            if shouldUsePrototypeCellHeightCalculation {
-                rowHeightCalculator = TablePrototypeCellHeightCalculator(tableView: tableView)
+                heightStrategy = PrototypeHeightStrategy(tableView: tableView)
            } else {
                rowHeightCalculator = nil
            }
        }
    }
-    open var isEmpty: Bool {
+    public var isEmpty: Bool {
        return sections.isEmpty
    }
-    public init(
+    public init(tableView: UITableView, scrollDelegate: UIScrollViewDelegate? = nil, shouldUseAutomaticCellRegistration: Bool = true) {
        tableView: UITableView,
        scrollDelegate: UIScrollViewDelegate? = nil,
        shouldUseAutomaticCellRegistration: Bool = true,
        cellHeightCalculator: RowHeightCalculator?)
    {
        super.init()
        if shouldUseAutomaticCellRegistration {
-            self.cellRegisterer = TableCellRegisterer(tableView: tableView)
+            self.cellManager = TableCellManager(tableView: tableView)
        }
        self.rowHeightCalculator = cellHeightCalculator
        self.scrollDelegate = scrollDelegate
        self.tableView = tableView
        self.tableView?.delegate = self
        self.tableView?.dataSource = self
        NotificationCenter.default.addObserver(self, selector: #selector(didReceiveAction), name: NSNotification.Name(rawValue: TableKitNotifications.CellAction), object: nil)
    }
    public convenience init(
        tableView: UITableView,
        scrollDelegate: UIScrollViewDelegate? = nil,
        shouldUseAutomaticCellRegistration: Bool = true,
        shouldUsePrototypeCellHeightCalculation: Bool = false)
    {
        let heightCalculator: TablePrototypeCellHeightCalculator? = shouldUsePrototypeCellHeightCalculation
            ? TablePrototypeCellHeightCalculator(tableView: tableView)
            : nil
-        self.init(
+        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(didReceiveAction), name: TableKitNotifications.CellAction, object: nil)
            tableView: tableView,
            scrollDelegate: scrollDelegate,
            shouldUseAutomaticCellRegistration: shouldUseAutomaticCellRegistration,
            cellHeightCalculator: heightCalculator
        )
    }
    deinit {
-        NotificationCenter.default.removeObserver(self)
+        NSNotificationCenter.defaultCenter().removeObserver(self)
    }
-    open func reload() {
+    public func reload() {
        tableView?.reloadData()
    }
    // MARK: - Private
    private func row(at indexPath: IndexPath) -> Row? {
        if indexPath.section < sections.count && indexPath.row < sections[indexPath.section].rows.count {
            return sections[indexPath.section].rows[indexPath.row]
        }
        return nil
    }
    // MARK: Public
-    @discardableResult
+    
-    open func invoke(
+    public func invoke(action action: TableRowActionType, cell: UITableViewCell?, indexPath: NSIndexPath) -> Any? {
-        action: TableRowActionType,
+        return sections[indexPath.section].items[indexPath.row].invoke(action, cell: cell, path: indexPath)
        cell: UITableViewCell?, indexPath: IndexPath,
        userInfo: [AnyHashable: Any]? = nil) -> Any?
    {
        guard let row = row(at: indexPath) else { return nil }
        return row.invoke(
            action: action,
            cell: cell,
            path: indexPath,
            userInfo: userInfo
        )
    }
-    open override func responds(to selector: Selector) -> Bool {
+    public override func respondsToSelector(selector: Selector) -> Bool {
-        return super.responds(to: selector) || scrollDelegate?.responds(to: selector) == true
+        return super.respondsToSelector(selector) || scrollDelegate?.respondsToSelector(selector) == true
    }
-    open override func forwardingTarget(for selector: Selector) -> Any? {
+    public override func forwardingTargetForSelector(selector: Selector) -> AnyObject? {
-        return scrollDelegate?.responds(to: selector) == true
+        return scrollDelegate?.respondsToSelector(selector) == true ? scrollDelegate : super.forwardingTargetForSelector(selector)
            ? scrollDelegate
            : super.forwardingTarget(for: selector)
    }
-    // MARK: - Internal
+    // MARK: - Internal -
-    func hasAction(_ action: TableRowActionType, atIndexPath indexPath: IndexPath) -> Bool {
+    
-        guard let row = row(at: indexPath) else { return false }
+    func hasAction(action: TableRowActionType, atIndexPath indexPath: NSIndexPath) -> Bool {
-        return row.has(action: action)
+        return sections[indexPath.section].items[indexPath.row].hasAction(action)
    }
-    @objc
+    func didReceiveAction(notification: NSNotification) {
    func didReceiveAction(_ notification: Notification) {
-        guard let action = notification.object as? TableCellAction, let indexPath = tableView?.indexPath(for: action.cell) else { return }
+        guard let action = notification.object as? TableCellAction, indexPath = tableView?.indexPathForCell(action.cell) else { return }
-        invoke(action: .custom(action.key), cell: action.cell, indexPath: indexPath, userInfo: notification.userInfo)
+        invoke(action: .custom(action.key), cell: action.cell, indexPath: indexPath)
    }
    // MARK: - Height
-    open func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
+    
-
+    public func tableView(tableView: UITableView, estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
        let row = sections[indexPath.section].rows[indexPath.row]
-        if rowHeightCalculator != nil {
+        let row = sections[indexPath.section].items[indexPath.row]
-            cellRegisterer?.register(cellType: row.cellType, forCellReuseIdentifier: row.reuseIdentifier)
+        return row.estimatedHeight ?? heightStrategy?.estimatedHeight(row, path: indexPath) ?? UITableViewAutomaticDimension
        }
        return row.defaultHeight
            ?? row.estimatedHeight
            ?? rowHeightCalculator?.estimatedHeight(forRow: row, at: indexPath)
            ?? UITableView.automaticDimension
    }
-    open func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
+    public func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
-        let row = sections[indexPath.section].rows[indexPath.row]
+        let row = sections[indexPath.section].items[indexPath.row]
        if rowHeightCalculator != nil {
            cellRegisterer?.register(cellType: row.cellType, forCellReuseIdentifier: row.reuseIdentifier)
        }
        let rowHeight = invoke(action: .height, cell: nil, indexPath: indexPath) as? CGFloat
-
+        
-        return rowHeight
+        return rowHeight ?? row.defaultHeight ?? heightStrategy?.height(row, path: indexPath) ?? UITableViewAutomaticDimension
            ?? row.defaultHeight
            ?? rowHeightCalculator?.height(forRow: row, at: indexPath)
            ?? UITableView.automaticDimension
    }
    // MARK: UITableViewDataSource - configuration
-    open func numberOfSections(in tableView: UITableView) -> Int {
+    
    public func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return sections.count
    }
-    open func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+    public func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        guard section < sections.count else { return 0 }
        return sections[section].numberOfRows
    }
-    open func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+    public func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
-        let row = sections[indexPath.section].rows[indexPath.row]
+        let row = sections[indexPath.section].items[indexPath.row]
-        cellRegisterer?.register(cellType: row.cellType, forCellReuseIdentifier: row.reuseIdentifier)
+        cellManager?.register(cellType: row.cellType, forCellReuseIdentifier: row.reuseIdentifier)
-        let cell = tableView.dequeueReusableCell(withIdentifier: row.reuseIdentifier, for: indexPath)
+        let cell = tableView.dequeueReusableCellWithIdentifier(row.reuseIdentifier, forIndexPath: indexPath)
        if cell.frame.size.width != tableView.frame.size.width {
-            cell.frame = CGRect(x: 0, y: 0, width: tableView.frame.size.width, height: cell.frame.size.height)
+            cell.frame = CGRectMake(0, 0, tableView.frame.size.width, cell.frame.size.height)
            cell.layoutIfNeeded()
        }
@ -204,272 +139,106 @@ open class TableDirector: NSObject, UITableViewDataSource, UITableViewDelegate {
    }
    // MARK: UITableViewDataSource - section setup
-    open func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
+    
-        guard section < sections.count else { return nil }
+    public func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        return sections[section].headerTitle
    }
-    open func tableView(_ tableView: UITableView, titleForFooterInSection section: Int) -> String? {
+    public func tableView(tableView: UITableView, titleForFooterInSection section: Int) -> String? {
        guard section < sections.count else { return nil }
        return sections[section].footerTitle
    }
    // MARK: UITableViewDelegate - section setup
-    open func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
+    
-        guard section < sections.count else { return nil }
+    public func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
        return sections[section].headerView
    }
-    open func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
+    public func tableView(tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
        guard section < sections.count else { return nil }
        return sections[section].footerView
    }
-    open func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
+    public func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
        guard section < sections.count else { return 0 }
        let section = sections[section]
-        return section.headerHeight ?? section.headerView?.frame.size.height ?? UITableView.automaticDimension
+        return section.headerHeight ?? section.headerView?.frame.size.height ?? 0
    }
-    open func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
+    public func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
        guard section < sections.count else { return 0 }
        let section = sections[section]
-        return section.footerHeight
+        return section.footerHeight ?? section.footerView?.frame.size.height ?? 0
            ?? section.footerView?.frame.size.height
            ?? UITableView.automaticDimension
    }
    // MARK: UITableViewDataSource - Index
    public func sectionIndexTitles(for tableView: UITableView) -> [String]? {
        var indexTitles = [String]()
        var indexTitlesIndexes = [Int]()
        sections.enumerated().forEach { index, section in
            if let title = section.indexTitle {
                indexTitles.append(title)
                indexTitlesIndexes.append(index)
            }
        }
        if !indexTitles.isEmpty {
            sectionsIndexTitlesIndexes = indexTitlesIndexes
            return indexTitles
        }
        sectionsIndexTitlesIndexes = nil
        return nil
    }
    public func tableView(
        _ tableView: UITableView,
        sectionForSectionIndexTitle title: String,
        at index: Int) -> Int
    {
        return sectionsIndexTitlesIndexes?[index] ?? 0
    }
    // MARK: UITableViewDelegate - actions
-    open func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+    
-        let cell = tableView.cellForRow(at: indexPath)
+    public func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        let cell = tableView.cellForRowAtIndexPath(indexPath)
        if invoke(action: .click, cell: cell, indexPath: indexPath) != nil {
-            tableView.deselectRow(at: indexPath, animated: true)
+            tableView.deselectRowAtIndexPath(indexPath, animated: true)
        } else {
            invoke(action: .select, cell: cell, indexPath: indexPath)
        }
    }
-    open func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
+    public func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
-        invoke(action: .deselect, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath)
+        invoke(action: .deselect, cell: tableView.cellForRowAtIndexPath(indexPath), indexPath: indexPath)
    }
-    open func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
+    public func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
        invoke(action: .willDisplay, cell: cell, indexPath: indexPath)
    }
-
+    
-    public func tableView(_ tableView: UITableView, didEndDisplaying cell: UITableViewCell, forRowAt indexPath: IndexPath) {
+    public func tableView(tableView: UITableView, shouldHighlightRowAtIndexPath indexPath: NSIndexPath) -> Bool {
-        invoke(action: .didEndDisplaying, cell: cell, indexPath: indexPath)
+        return invoke(action: .shouldHighlight, cell: tableView.cellForRowAtIndexPath(indexPath), indexPath: indexPath) as? Bool ?? true
    }
-    open func tableView(_ tableView: UITableView, shouldHighlightRowAt indexPath: IndexPath) -> Bool {
+    public func tableView(tableView: UITableView, willSelectRowAtIndexPath indexPath: NSIndexPath) -> NSIndexPath? {
-        return invoke(action: .shouldHighlight, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath) as? Bool ?? true
+        
    }
    open func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
        if hasAction(.willSelect, atIndexPath: indexPath) {
-            return invoke(action: .willSelect, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath) as? IndexPath
+            return invoke(action: .willSelect, cell: tableView.cellForRowAtIndexPath(indexPath), indexPath: indexPath) as? NSIndexPath
        }
        return indexPath
    }
    open func tableView(_ tableView: UITableView, willDeselectRowAt indexPath: IndexPath) -> IndexPath? {
        if hasAction(.willDeselect, atIndexPath: indexPath) {
            return invoke(action: .willDeselect, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath) as? IndexPath
        }
        return indexPath
    }
    @available(iOS 13.0, *)
    open func tableView(
        _ tableView: UITableView,
        shouldBeginMultipleSelectionInteractionAt indexPath: IndexPath) -> Bool
    {
        invoke(action: .shouldBeginMultipleSelection, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath) as? Bool ?? false
    }
    @available(iOS 13.0, *)
    open func tableView(
        _ tableView: UITableView,
        didBeginMultipleSelectionInteractionAt indexPath: IndexPath)
    {
        invoke(action: .didBeginMultipleSelection, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath)
    }
-    @available(iOS 13.0, *)
+    // MARK: - Sections manipulation -
    open func tableView(
        _ tableView: UITableView,
        contextMenuConfigurationForRowAt indexPath: IndexPath,
        point: CGPoint) -> UIContextMenuConfiguration?
    {
        invoke(action: .showContextMenu, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath, userInfo: [TableKitUserInfoKeys.ContextMenuInvokePoint: point]) as? UIContextMenuConfiguration
    }
    // MARK: - Row editing
    open func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
        return sections[indexPath.section].rows[indexPath.row].isEditingAllowed(forIndexPath: indexPath)
    }
    open func tableView(_ tableView: UITableView,
                        leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
        let currentRow = sections[indexPath.section].rows[indexPath.row]
        let configuration = UISwipeActionsConfiguration(actions: currentRow.leadingContextualActions)
        configuration.performsFirstActionWithFullSwipe = currentRow.performsFirstActionWithFullSwipe
        return configuration
    }
    open func tableView(_ tableView: UITableView,
                        trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
        let currentRow = sections[indexPath.section].rows[indexPath.row]
        let configuration = UISwipeActionsConfiguration(actions: currentRow.trailingContextualActions)
        configuration.performsFirstActionWithFullSwipe = currentRow.performsFirstActionWithFullSwipe
        return configuration
    }
-    open func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCell.EditingStyle {
+    public func append(section section: TableSection) -> Self {
        if invoke(action: .canDelete, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath) as? Bool ?? false {
            return UITableViewCell.EditingStyle.delete
        }
        return UITableViewCell.EditingStyle.none
    }
    public func tableView(_ tableView: UITableView, shouldIndentWhileEditingRowAt indexPath: IndexPath) -> Bool {
        return false
    }
    public func tableView(_ tableView: UITableView, targetIndexPathForMoveFromRowAt sourceIndexPath: IndexPath, toProposedIndexPath proposedDestinationIndexPath: IndexPath) -> IndexPath {
        return invoke(action: .canMoveTo, cell: tableView.cellForRow(at: sourceIndexPath), indexPath: sourceIndexPath, userInfo: [TableKitUserInfoKeys.CellCanMoveProposedIndexPath: proposedDestinationIndexPath]) as? IndexPath ?? proposedDestinationIndexPath
    }
    open func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
        if editingStyle == .delete {
            invoke(action: .clickDelete, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath)
        }
    }
    open func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
        return invoke(action: .canMove, cell: tableView.cellForRow(at: indexPath), indexPath: indexPath) as? Bool ?? false
    }
    open func tableView(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
        invoke(action: .move, cell: tableView.cellForRow(at: sourceIndexPath), indexPath: sourceIndexPath, userInfo: [TableKitUserInfoKeys.CellMoveDestinationIndexPath: destinationIndexPath])
    }
    open func tableView(_ tableView: UITableView, accessoryButtonTappedForRowWith indexPath: IndexPath) {
      let cell = tableView.cellForRow(at: indexPath)
      invoke(action: .accessoryButtonTap, cell: cell, indexPath: indexPath)
    }
 }
 // MARK: - Sections manipulation
 extension TableDirector {
    @discardableResult
    public func append(section: TableSection) -> Self {
        append(sections: [section])
        return self
    }
-    @discardableResult
+    public func append(sections sections: [TableSection]) -> Self {
-    public func append(sections: [TableSection]) -> Self {
+        
-
+        sections.forEach { $0.tableDirector = self }
-        self.sections.append(contentsOf: sections)
+        self.sections.appendContentsOf(sections)
        return self
    }
-    @discardableResult
+    public func append(rows rows: [Row]) -> Self {
-    public func append(rows: [Row]) -> Self {
+        
        append(section: TableSection(rows: rows))
        return self
    }
-    @discardableResult
+    public func insert(section section: TableSection, atIndex index: Int) -> Self {
-    public func insert(section: TableSection, atIndex index: Int) -> Self {
+        
-
+        sections.insert(section, atIndex: index)
        sections.insert(section, at: index)
        return self
    }
-    @discardableResult
+    public func delete(index index: Int) -> Self {
-    public func replaceSection(at index: Int, with section: TableSection) -> Self {
+        
-
+        sections.removeAtIndex(index)
        if index < sections.count {
            sections[index] = section
        }
        return self
    }
    @discardableResult
    public func delete(sectionAt index: Int) -> Self {
        sections.remove(at: index)
        return self
    }
    @discardableResult
    public func remove(sectionAt index: Int) -> Self {
        return delete(sectionAt: index)
    }
    @discardableResult
    public func clear() -> Self {
-
+        
        rowHeightCalculator?.invalidate()
        sections.removeAll()
        return self
    }
-    
+}
    // MARK: - deprecated methods
    @available(*, deprecated, message: "Use 'delete(sectionAt:)' method instead")
    @discardableResult
    public func delete(index: Int) -> Self {
        sections.remove(at: index)
        return self
    }
 }
--- a/Sources/TableKit.swift
+++ b/Sources/TableKit.swift
@ -1,111 +0,0 @@
 //
 //    Copyright (c) 2015 Max Sokolov https://twitter.com/max_sokolov
 //
 //    Permission is hereby granted, free of charge, to any person obtaining a copy of
 //    this software and associated documentation files (the "Software"), to deal in
 //    the Software without restriction, including without limitation the rights to
 //    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 //    the Software, and to permit persons to whom the Software is furnished to do so,
 //    subject to the following conditions:
 //
 //    The above copyright notice and this permission notice shall be included in all
 //    copies or substantial portions of the Software.
 //
 //    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 //    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 //    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 //    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 //    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 //    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 import UIKit
 struct TableKitNotifications {
    static let CellAction = "TableKitNotificationsCellAction"
 }
 public struct TableKitUserInfoKeys {
    public static let CellMoveDestinationIndexPath = "TableKitCellMoveDestinationIndexPath"
    public static let CellCanMoveProposedIndexPath = "CellCanMoveProposedIndexPath"
    public static let ContextMenuInvokePoint = "ContextMenuInvokePoint"
 }
 public protocol RowConfigurable {
    func configure(_ cell: UITableViewCell)
 }
 public protocol RowActionable {
    var leadingContextualActions: [UIContextualAction] { get }
    var trailingContextualActions: [UIContextualAction] { get }
    var performsFirstActionWithFullSwipe: Bool { get }
    func isEditingAllowed(forIndexPath indexPath: IndexPath) -> Bool
    func invoke(
        action: TableRowActionType,
        cell: UITableViewCell?,
        path: IndexPath,
        userInfo: [AnyHashable: Any]?) -> Any?
    func has(action: TableRowActionType) -> Bool
 }
 public protocol RowHashable {
    var hashValue: Int { get }
 }
 public protocol Row: RowConfigurable, RowActionable, RowHashable {
    var reuseIdentifier: String { get }
    var cellType: AnyClass { get }
    var layoutType: LayoutType { get }
    var estimatedHeight: CGFloat? { get }
    var defaultHeight: CGFloat? { get }
 }
 public enum TableRowActionType {
    case click
    case clickDelete
    case select
    case deselect
    case willSelect
    case willDeselect
    case willDisplay
    case didEndDisplaying
    case shouldHighlight
    case shouldBeginMultipleSelection
    case didBeginMultipleSelection
    case height
    case canEdit
    case configure
    case canDelete
    case canMove
    case canMoveTo
    case move
    case showContextMenu
    case accessoryButtonTap
    case custom(String)
    var key: String {
        switch (self) {
        case .custom(let key):
            return key
        default:
            return "_\(self)"
        }
    }
 }
 public protocol RowHeightCalculator {
    func height(forRow row: Row, at indexPath: IndexPath) -> CGFloat
    func estimatedHeight(forRow row: Row, at indexPath: IndexPath) -> CGFloat
    func invalidate()
 }
--- a/Sources/TableRow.swift
+++ b/Sources/TableRow.swift
@ -20,137 +20,89 @@
 import UIKit
-open class TableRow<CellType: ConfigurableCell>: Row where CellType: UITableViewCell {
+public protocol RowConfigurable {
    public let item: CellType.CellData
    private lazy var actions = [String: [TableRowAction<CellType>]]()
    open var leadingContextualActions: [UIContextualAction] {
        []
    }
    open var trailingContextualActions: [UIContextualAction] {
        []
    }
    open var performsFirstActionWithFullSwipe: Bool {
        false
    }
-    open var hashValue: Int {
+    func configure(cell: UITableViewCell)
 }
 public protocol RowActionable {
    func invoke(action: TableRowActionType, cell: UITableViewCell?, path: NSIndexPath) -> Any?
    func hasAction(action: TableRowActionType) -> Bool
 }
 public protocol RowHashable {
    var hashValue: Int { get }
 }
 public protocol Row: RowConfigurable, RowActionable, RowHashable {
    var reuseIdentifier: String { get }
    var cellType: AnyClass { get }
    var estimatedHeight: CGFloat? { get }
    var defaultHeight: CGFloat? { get }
 }
 public class TableRow<ItemType, CellType: ConfigurableCell where CellType.T == ItemType, CellType: UITableViewCell>: Row {
    public let item: ItemType
    private lazy var actions = [String: TableRowAction<ItemType, CellType>]()
    public var hashValue: Int {
        return ObjectIdentifier(self).hashValue
    }
-    open var reuseIdentifier: String {
+    public var reuseIdentifier: String {
        return CellType.reuseIdentifier
    }
-    open var estimatedHeight: CGFloat? {
+    public var estimatedHeight: CGFloat? {
        return CellType.estimatedHeight
    }
-    open var defaultHeight: CGFloat? {
+    public var defaultHeight: CGFloat? {
        return CellType.defaultHeight
    }
    open var layoutType: LayoutType {
        return CellType.layoutType
    }
-    open var cellType: AnyClass {
+    public var cellType: AnyClass {
        return CellType.self
    }
-    public init(item: CellType.CellData,
+    public init(item: ItemType, actions: [TableRowAction<ItemType, CellType>]? = nil) {
                actions: [TableRowAction<CellType>]? = nil) {
        self.item = item
-        
+        actions?.forEach { self.actions[$0.type.key] = $0 }
        actions?.forEach { on($0) }
    }
    // MARK: - RowConfigurable -
-    open func configure(_ cell: UITableViewCell) {
+    public func configure(cell: UITableViewCell) {
        (cell as? CellType)?.configure(with: item)
    }
-   
+    
    // MARK: - RowActionable -
-    open func invoke(action: TableRowActionType, cell: UITableViewCell?, path: IndexPath, userInfo: [AnyHashable: Any]? = nil) -> Any? {
+    public func invoke(action: TableRowActionType, cell: UITableViewCell?, path: NSIndexPath) -> Any? {
-
+        return actions[action.key]?.invoke(item: item, cell: cell, path: path)
        return actions[action.key]?.compactMap({ $0.invokeActionOn(cell: cell, item: item, path: path, userInfo: userInfo) }).last
    }
-    open func has(action: TableRowActionType) -> Bool {
+    public func hasAction(action: TableRowActionType) -> Bool {
        return actions[action.key] != nil
    }
    open func isEditingAllowed(forIndexPath indexPath: IndexPath) -> Bool {
        if actions[TableRowActionType.canEdit.key] != nil {
            return invoke(action: .canEdit, cell: nil, path: indexPath) as? Bool ?? false
        }
        return !leadingContextualActions.isEmpty
            || !trailingContextualActions.isEmpty
            || actions[TableRowActionType.clickDelete.key] != nil
    }
    // MARK: - actions -
-    @discardableResult
+    public func action(action: TableRowAction<ItemType, CellType>) -> Self {
    open func on(_ action: TableRowAction<CellType>) -> Self {
        if actions[action.type.key] == nil {
            actions[action.type.key] = [TableRowAction<CellType>]()
        }
        actions[action.type.key]?.append(action)
        actions[action.type.key] = action
        return self
    }
-
+    
-    @discardableResult
+    public func action<T>(type: TableRowActionType, handler: (data: TableRowActionData<ItemType, CellType>) -> T) -> Self {
    open func on<T>(_ type: TableRowActionType, handler: @escaping (_ options: TableRowActionOptions<CellType>) -> T) -> Self {
-        return on(TableRowAction<CellType>(type, handler: handler))
+        actions[type.key] = TableRowAction(type, handler: handler)
        return self
    }
-    
+}
    @discardableResult
    open func on(_ key: String, handler: @escaping (_ options: TableRowActionOptions<CellType>) -> ()) -> Self {
        return on(TableRowAction<CellType>(.custom(key), handler: handler))
    }
    open func removeAllActions() {
        actions.removeAll()
    }
    open func removeAction(forActionId actionId: String) {
        for (key, value) in actions {
            if let actionIndex = value.firstIndex(where: { $0.id == actionId }) {
                actions[key]?.remove(at: actionIndex)
            }
        }
    }
    // MARK: - deprecated actions -
    @available(*, deprecated, message: "Use 'on' method instead")
    @discardableResult
    open func action(_ action: TableRowAction<CellType>) -> Self {
        return on(action)
    }
    @available(*, deprecated, message: "Use 'on' method instead")
    @discardableResult
    open func action<T>(_ type: TableRowActionType, handler: @escaping (_ options: TableRowActionOptions<CellType>) -> T) -> Self {
        return on(TableRowAction<CellType>(type, handler: handler))
    }
 }
--- a/Sources/TableRowAction.swift
+++ b/Sources/TableRowAction.swift
@ -20,14 +20,37 @@
 import UIKit
-open class TableRowActionOptions<CellType: ConfigurableCell> where CellType: UITableViewCell {
+public enum TableRowActionType {
    case click
    case select
    case deselect
    case willSelect
    case willDisplay
    case shouldHighlight
    case height
    case configure
    case custom(String)
    var key: String {
        switch (self) {
        case .custom(let key):
            return key
        default:
            return "_\(self)"
        }
    }
 }
-    public let item: CellType.CellData
+public class TableRowActionData<ItemType, CellType: ConfigurableCell where CellType.T == ItemType, CellType: UITableViewCell> {
    public let item: ItemType
    public let cell: CellType?
-    public let indexPath: IndexPath
+    public let indexPath: NSIndexPath
-    public let userInfo: [AnyHashable: Any]?
+    public let userInfo: [NSObject: AnyObject]?
-    init(item: CellType.CellData, cell: CellType?, path: IndexPath, userInfo: [AnyHashable: Any]?) {
+    init(item: ItemType, cell: CellType?, path: NSIndexPath, userInfo: [NSObject: AnyObject]?) {
        self.item = item
        self.cell = cell
@ -36,48 +59,24 @@ open class TableRowActionOptions<CellType: ConfigurableCell> where CellType: UIT
    }
 }
-private enum TableRowActionHandler<CellType: ConfigurableCell> where CellType: UITableViewCell {
+public class TableRowAction<ItemType, CellType: ConfigurableCell where CellType.T == ItemType, CellType: UITableViewCell> {
    case voidAction((TableRowActionOptions<CellType>) -> Void)
    case action((TableRowActionOptions<CellType>) -> Any?)
    func invoke(withOptions options: TableRowActionOptions<CellType>) -> Any? {
        switch self {
        case .voidAction(let handler):
            return handler(options)
        case .action(let handler):
            return handler(options)
        }
    }
 }
 open class TableRowAction<CellType: ConfigurableCell> where CellType: UITableViewCell {
    open var id: String?
    public let type: TableRowActionType
-    private let handler: TableRowActionHandler<CellType>
+    private let handler: ((data: TableRowActionData<ItemType, CellType>) -> Any?)
-    
+
-    public init(_ type: TableRowActionType, handler: @escaping (_ options: TableRowActionOptions<CellType>) -> Void) {
+    public init(_ type: TableRowActionType, handler: (data: TableRowActionData<ItemType, CellType>) -> Void) {
        self.type = type
-        self.handler = .voidAction(handler)
+        self.handler = handler
    }
-    public init(_ key: String, handler: @escaping (_ options: TableRowActionOptions<CellType>) -> Void) {
+    public init<T>(_ type: TableRowActionType, handler: (data: TableRowActionData<ItemType, CellType>) -> T) {
        self.type = .custom(key)
        self.handler = .voidAction(handler)
    }
    public init<T>(_ type: TableRowActionType, handler: @escaping (_ options: TableRowActionOptions<CellType>) -> T) {
        self.type = type
-        self.handler = .action(handler)
+        self.handler = handler
    }
-    public func invokeActionOn(cell: UITableViewCell?, item: CellType.CellData, path: IndexPath, userInfo: [AnyHashable: Any]?) -> Any? {
+    func invoke(item item: ItemType, cell: UITableViewCell?, path: NSIndexPath) -> Any? {
-
+        return handler(data: TableRowActionData(item: item, cell: cell as? CellType, path: path, userInfo: nil))
        return handler.invoke(withOptions: TableRowActionOptions(item: item, cell: cell as? CellType, path: path, userInfo: userInfo))
    }
-}
+}
--- a/Sources/TableSection.swift
+++ b/Sources/TableSection.swift
@ -20,32 +20,33 @@
 import UIKit
-open class TableSection {
+public class TableSection {
    open private(set) var rows = [Row]()
-    open var headerTitle: String?
+    weak var tableDirector: TableDirector?
    open var footerTitle: String?
    open var indexTitle: String?
-    open var headerView: UIView?
+    public private(set) var items = [Row]()
    open var footerView: UIView?
-    open var headerHeight: CGFloat? = nil
+    public var headerTitle: String?
-    open var footerHeight: CGFloat? = nil
+    public var footerTitle: String?
-    open var numberOfRows: Int {
+    public var headerView: UIView?
-        return rows.count
+    public var footerView: UIView?
    public var headerHeight: CGFloat? = nil
    public var footerHeight: CGFloat? = nil
    public var numberOfRows: Int {
        return items.count
    }
-    open var isEmpty: Bool {
+    public var isEmpty: Bool {
-        return rows.isEmpty
+        return items.isEmpty
    }
    public init(rows: [Row]? = nil) {
        if let initialRows = rows {
-            self.rows.append(contentsOf: initialRows)
+            items.appendContentsOf(initialRows)
        }
    }
@ -62,49 +63,26 @@ open class TableSection {
        self.headerView = headerView
        self.footerView = footerView
    }
-
+    
    // MARK: - Public -
-    open func clear() {
+    public func clear() {
-        rows.removeAll()
+        items.removeAll()
    }
-    open func append(row: Row) {
+    public func append(row row: Row) {
        append(rows: [row])
    }
-    open func append(rows: [Row]) {
+    public func append(rows rows: [Row]) {
-        self.rows.append(contentsOf: rows)
+        items.appendContentsOf(rows)
    }
-    open func insert(row: Row, at index: Int) {
+    public func insert(row row: Row, atIndex index: Int) {
-        rows.insert(row, at: index)
+        items.insert(row, atIndex: index)
    }
-    open func insert(rows: [Row], at index: Int) {
+    public func delete(index index: Int) {
-        self.rows.insert(contentsOf: rows, at: index)
+        items.removeAtIndex(index)
    }
-
+}
    open func replace(rowAt index: Int, with row: Row) {
        rows[index] = row
    }
    open func swap(from: Int, to: Int) {
        rows.swapAt(from, to)
    }
    open func delete(rowAt index: Int) {
        rows.remove(at: index)
    }
    open func remove(rowAt index: Int) {
        rows.remove(at: index)
    }
    // MARK: - deprecated methods -
    @available(*, deprecated, message: "Use 'delete(rowAt:)' method instead")
    open func delete(index: Int) {
        rows.remove(at: index)
    }
 }
--- a/Sources/UITableViewCell+Extensions.swift
+++ b/Sources/UITableViewCell+Extensions.swift
@ -1,32 +0,0 @@
 import UIKit
 extension UITableViewCell {
    var tableView: UITableView? {
        var view = superview
        while view != nil && !(view is UITableView) {
            view = view?.superview
        }
        return view as? UITableView
    }
    var indexPath: IndexPath? {
        guard let indexPath = tableView?.indexPath(for: self) else {
            return nil
        }
        return indexPath
    }
    public func height(layoutType: LayoutType) -> CGFloat {
        switch layoutType {
        case .auto:
            return contentView.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize).height
        case .manual:
            return contentView.subviews.map { $0.frame.maxY }.max() ?? 0
        }
    }
 }
--- a/TableKit.podspec
+++ b/TableKit.podspec
@ -2,16 +2,16 @@ Pod::Spec.new do |s|
    s.name                  = 'TableKit'
    s.module_name           = 'TableKit'
-    s.version               = '2.12'
+    s.version               = '1.0.0'
-    s.homepage              = 'https://git.svc.touchin.ru/TouchInstinct/TableKit'
+    s.homepage              = 'https://github.com/maxsokolov/TableKit'
-    s.summary               = 'Type-safe declarative table views with Swift.'
+    s.summary               = 'Type-safe declarative table views. Swift 2.2 is required.'
    s.author                = { 'Max Sokolov' => 'i@maxsokolov.net' }
    s.license               = { :type => 'MIT', :file => 'LICENSE' }
-    s.platforms             = { :ios => '12.0' }
+    s.platforms             = { :ios => '8.0' }
-    s.ios.deployment_target = '12.0'
+    s.ios.deployment_target = '8.0'
    s.source_files          = 'Sources/*.swift'
-    s.source                = { :git => 'https://git.svc.touchin.ru/TouchInstinct/TableKit.git', :tag => s.version }
+    s.source                = { :git => 'https://github.com/maxsokolov/TableKit.git', :tag => s.version }
-end
+end
--- a/TableKit.xcodeproj/project.pbxproj
+++ b/TableKit.xcodeproj/project.pbxproj
@ -7,16 +7,9 @@
 	objects = {
 /* Begin PBXBuildFile section */
-		2CBFA2F521F692F100147B56 /* ExpandableState.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2CBFA2F421F692F100147B56 /* ExpandableState.swift */; };
+		50CF6E6B1D6704FE004746FF /* TableCellManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50CF6E6A1D6704FE004746FF /* TableCellManager.swift */; };
 		3201E78421BE9DE1001DF9E7 /* ExpandableCellHeightCalculator.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3201E78321BE9DE1001DF9E7 /* ExpandableCellHeightCalculator.swift */; };
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 		50CF6E6B1D6704FE004746FF /* TableCellRegisterer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50CF6E6A1D6704FE004746FF /* TableCellRegisterer.swift */; };
 		50E858581DB153F500A9AA55 /* TableKit.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50E858571DB153F500A9AA55 /* TableKit.swift */; };
 		DA9EA7AF1D0EC2C90021F650 /* ConfigurableCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA9EA7A61D0EC2C90021F650 /* ConfigurableCell.swift */; };
-		DA9EA7B01D0EC2C90021F650 /* TablePrototypeCellHeightCalculator.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA9EA7A71D0EC2C90021F650 /* TablePrototypeCellHeightCalculator.swift */; };
+		DA9EA7B01D0EC2C90021F650 /* HeightStrategy.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA9EA7A71D0EC2C90021F650 /* HeightStrategy.swift */; };
 		DA9EA7B11D0EC2C90021F650 /* Operators.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA9EA7A81D0EC2C90021F650 /* Operators.swift */; };
 		DA9EA7B21D0EC2C90021F650 /* TableCellAction.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA9EA7A91D0EC2C90021F650 /* TableCellAction.swift */; };
 		DA9EA7B31D0EC2C90021F650 /* TableDirector.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA9EA7AA1D0EC2C90021F650 /* TableDirector.swift */; };
@ -38,17 +31,10 @@
 /* End PBXContainerItemProxy section */
 /* Begin PBXFileReference section */
-		2CBFA2F421F692F100147B56 /* ExpandableState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ExpandableState.swift; sourceTree = "<group>"; };
+		50CF6E6A1D6704FE004746FF /* TableCellManager.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TableCellManager.swift; sourceTree = "<group>"; };
 		3201E78321BE9DE1001DF9E7 /* ExpandableCellHeightCalculator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ExpandableCellHeightCalculator.swift; sourceTree = "<group>"; };
 		3201E78521BE9E25001DF9E7 /* UITableViewCell+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UITableViewCell+Extensions.swift"; sourceTree = "<group>"; };
 		3201E78721BE9EB2001DF9E7 /* Expandable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Expandable.swift; sourceTree = "<group>"; };
 		3201E78921BE9ED4001DF9E7 /* ExpandableCellViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ExpandableCellViewModel.swift; sourceTree = "<group>"; };
 		32BDFE9E21C167F400D0BBB4 /* LayoutType.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LayoutType.swift; sourceTree = "<group>"; };
 		50CF6E6A1D6704FE004746FF /* TableCellRegisterer.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TableCellRegisterer.swift; sourceTree = "<group>"; };
 		50E858571DB153F500A9AA55 /* TableKit.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TableKit.swift; sourceTree = "<group>"; };
 		DA9EA7561D0B679A0021F650 /* TableKit.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = TableKit.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		DA9EA7A61D0EC2C90021F650 /* ConfigurableCell.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ConfigurableCell.swift; sourceTree = "<group>"; };
-		DA9EA7A71D0EC2C90021F650 /* TablePrototypeCellHeightCalculator.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TablePrototypeCellHeightCalculator.swift; sourceTree = "<group>"; };
+		DA9EA7A71D0EC2C90021F650 /* HeightStrategy.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = HeightStrategy.swift; sourceTree = "<group>"; };
 		DA9EA7A81D0EC2C90021F650 /* Operators.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Operators.swift; sourceTree = "<group>"; };
 		DA9EA7A91D0EC2C90021F650 /* TableCellAction.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TableCellAction.swift; sourceTree = "<group>"; };
 		DA9EA7AA1D0EC2C90021F650 /* TableDirector.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TableDirector.swift; sourceTree = "<group>"; };
@ -102,22 +88,15 @@
 		DA9EA7A51D0EC2B90021F650 /* Sources */ = {
 			isa = PBXGroup;
 			children = (
 				DA9EA7A61D0EC2C90021F650 /* ConfigurableCell.swift */,
 				3201E78321BE9DE1001DF9E7 /* ExpandableCellHeightCalculator.swift */,
 				DA9EA7A81D0EC2C90021F650 /* Operators.swift */,
 				DA9EA7A91D0EC2C90021F650 /* TableCellAction.swift */,
 				50CF6E6A1D6704FE004746FF /* TableCellRegisterer.swift */,
 				DA9EA7AA1D0EC2C90021F650 /* TableDirector.swift */,
-				50E858571DB153F500A9AA55 /* TableKit.swift */,
+				50CF6E6A1D6704FE004746FF /* TableCellManager.swift */,
 				DA9EA7A71D0EC2C90021F650 /* TablePrototypeCellHeightCalculator.swift */,
 				DA9EA7AB1D0EC2C90021F650 /* TableRow.swift */,
 				DA9EA7AC1D0EC2C90021F650 /* TableRowAction.swift */,
 				DA9EA7AE1D0EC2C90021F650 /* TableSection.swift */,
-				3201E78521BE9E25001DF9E7 /* UITableViewCell+Extensions.swift */,
+				DA9EA7A91D0EC2C90021F650 /* TableCellAction.swift */,
-				3201E78721BE9EB2001DF9E7 /* Expandable.swift */,
+				DA9EA7A61D0EC2C90021F650 /* ConfigurableCell.swift */,
-				3201E78921BE9ED4001DF9E7 /* ExpandableCellViewModel.swift */,
+				DA9EA7A81D0EC2C90021F650 /* Operators.swift */,
-				32BDFE9E21C167F400D0BBB4 /* LayoutType.swift */,
+				DA9EA7A71D0EC2C90021F650 /* HeightStrategy.swift */,
 				2CBFA2F421F692F100147B56 /* ExpandableState.swift */,
 			);
 			path = Sources;
 			sourceTree = "<group>";
@ -195,16 +174,14 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0730;
-				LastUpgradeCheck = 1000;
+				LastUpgradeCheck = 0730;
 				ORGANIZATIONNAME = "Max Sokolov";
 				TargetAttributes = {
 					DA9EA7551D0B679A0021F650 = {
 						CreatedOnToolsVersion = 7.3;
 						LastSwiftMigration = 1000;
 					};
 					DA9EA7C31D0EC45F0021F650 = {
 						CreatedOnToolsVersion = 7.3;
 						LastSwiftMigration = 1000;
 					};
 				};
 			};
@ -213,7 +190,6 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				English,
 				en,
 			);
 			mainGroup = DA9EA74C1D0B679A0021F650;
@ -249,22 +225,15 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				3201E78A21BE9ED4001DF9E7 /* ExpandableCellViewModel.swift in Sources */,
+				50CF6E6B1D6704FE004746FF /* TableCellManager.swift in Sources */,
 				50CF6E6B1D6704FE004746FF /* TableCellRegisterer.swift in Sources */,
 				DA9EA7AF1D0EC2C90021F650 /* ConfigurableCell.swift in Sources */,
 				DA9EA7B31D0EC2C90021F650 /* TableDirector.swift in Sources */,
 				3201E78821BE9EB2001DF9E7 /* Expandable.swift in Sources */,
 				2CBFA2F521F692F100147B56 /* ExpandableState.swift in Sources */,
 				DA9EA7B71D0EC2C90021F650 /* TableSection.swift in Sources */,
-				DA9EA7B01D0EC2C90021F650 /* TablePrototypeCellHeightCalculator.swift in Sources */,
+				DA9EA7B01D0EC2C90021F650 /* HeightStrategy.swift in Sources */,
 				3201E78421BE9DE1001DF9E7 /* ExpandableCellHeightCalculator.swift in Sources */,
 				DA9EA7B51D0EC2C90021F650 /* TableRowAction.swift in Sources */,
 				DA9EA7B21D0EC2C90021F650 /* TableCellAction.swift in Sources */,
 				32BDFE9F21C167F400D0BBB4 /* LayoutType.swift in Sources */,
 				3201E78621BE9E25001DF9E7 /* UITableViewCell+Extensions.swift in Sources */,
 				DA9EA7B11D0EC2C90021F650 /* Operators.swift in Sources */,
 				DA9EA7B41D0EC2C90021F650 /* TableRow.swift in Sources */,
 				50E858581DB153F500A9AA55 /* TableKit.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@ -296,23 +265,13 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
@ -340,7 +299,6 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@ -356,23 +314,13 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
@ -392,8 +340,6 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
@ -405,7 +351,6 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				DEFINES_MODULE = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
@ -418,7 +363,6 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@ -426,7 +370,6 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				DEFINES_MODULE = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
@ -438,7 +381,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.tablekit.TableKit;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@ -450,7 +392,6 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.tablekit.TableKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@ -462,7 +403,6 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.tablekit.TableKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
--- a/TableKit.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
+++ b/TableKit.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@ -1,8 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
 	<key>IDEDidComputeMac32BitWarning</key>
 	<true/>
 </dict>
 </plist>
--- a/TableKit.xcodeproj/xcshareddata/xcschemes/TableKit.xcscheme
+++ b/TableKit.xcodeproj/xcshareddata/xcschemes/TableKit.xcscheme
@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1000"
+   LastUpgradeVersion = "0730"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
--- a/Tests/TableKitTests.swift
+++ b/Tests/TableKitTests.swift
@ -66,7 +66,7 @@ class TestTableViewCell: UITableViewCell, ConfigurableCell {
    }
 }
-class TableKitTests: XCTestCase {
+class TabletTests: XCTestCase {
    var testController: TestController!
@ -74,10 +74,7 @@ class TableKitTests: XCTestCase {
        super.setUp()
        testController = TestController()
-        testController.tableView.frame = UIScreen.main.bounds
+        testController.view.hidden = false
        testController.tableView.isHidden = false
        testController.tableView.setNeedsLayout()
        testController.tableView.layoutIfNeeded()
    }
    override func tearDown() {
@ -97,15 +94,15 @@ class TableKitTests: XCTestCase {
        let data = TestData(title: "title")
-        let row = TableRow<TestTableViewCell>(item: data)
+        let row = TableRow<TestData, TestTableViewCell>(item: data)
        testController.tableDirector += row
        testController.tableView.reloadData()
-        XCTAssertTrue(testController.tableView.dataSource?.numberOfSections?(in: testController.tableView) == 1, "Table view should have a section")
+        XCTAssertTrue(testController.tableView.dataSource?.numberOfSectionsInTableView?(testController.tableView) == 1, "Table view should have a section")
        XCTAssertTrue(testController.tableView.dataSource?.tableView(testController.tableView, numberOfRowsInSection: 0) == 1, "Table view should have certain number of rows in a section")
-        let cell = testController.tableView.cellForRow(at: IndexPath(row: 0, section: 0)) as? TestTableViewCell
+        let cell = testController.tableView.cellForRowAtIndexPath(NSIndexPath(forRow: 0, inSection: 0)) as? TestTableViewCell
        XCTAssertNotNil(cell)
        XCTAssertTrue(cell?.textLabel?.text == data.title)
    }
@ -114,17 +111,17 @@ class TableKitTests: XCTestCase {
        let data = [TestData(title: "1"), TestData(title: "2"), TestData(title: "3")]
-        let rows: [Row] = data.map({ TableRow<TestTableViewCell>(item: $0) })
+        let rows: [Row] = data.map({ TableRow<TestData, TestTableViewCell>(item: $0) })
        testController.tableDirector += rows
        testController.tableView.reloadData()
-        XCTAssertTrue(testController.tableView.dataSource?.numberOfSections?(in: testController.tableView) == 1, "Table view should have a section")
+        XCTAssertTrue(testController.tableView.dataSource?.numberOfSectionsInTableView?(testController.tableView) == 1, "Table view should have a section")
        XCTAssertTrue(testController.tableView.dataSource?.tableView(testController.tableView, numberOfRowsInSection: 0) == data.count, "Table view should have certain number of rows in a section")
-        for (index, element) in data.enumerated() {
+        for (index, element) in data.enumerate() {
-            let cell = testController.tableView.cellForRow(at: IndexPath(row: index, section: 0)) as? TestTableViewCell
+            let cell = testController.tableView.cellForRowAtIndexPath(NSIndexPath(forRow: index, inSection: 0)) as? TestTableViewCell
            XCTAssertNotNil(cell)
            XCTAssertTrue(cell?.textLabel?.text == element.title)
        }
@ -132,7 +129,7 @@ class TableKitTests: XCTestCase {
    func testTableSectionCreatesSectionWithHeaderAndFooterTitles() {
-        let row = TableRow<TestTableViewCell>(item: TestData(title: "title"))
+        let row = TableRow<TestData, TestTableViewCell>(item: TestData(title: "title"))
        let sectionHeaderTitle = "Header Title"
        let sectionFooterTitle = "Footer Title"
@ -142,7 +139,7 @@ class TableKitTests: XCTestCase {
        testController.tableDirector += section
        testController.tableView.reloadData()
-        XCTAssertTrue(testController.tableView.dataSource?.numberOfSections?(in: testController.tableView) == 1, "Table view should have a section")
+        XCTAssertTrue(testController.tableView.dataSource?.numberOfSectionsInTableView?(testController.tableView) == 1, "Table view should have a section")
        XCTAssertTrue(testController.tableView.dataSource?.tableView(testController.tableView, numberOfRowsInSection: 0) == 1, "Table view should have certain number of rows in a section")
        XCTAssertTrue(testController.tableView.dataSource?.tableView?(testController.tableView, titleForHeaderInSection: 0) == sectionHeaderTitle)
@ -151,7 +148,7 @@ class TableKitTests: XCTestCase {
    func testTableSectionCreatesSectionWithHeaderAndFooterViews() {
-        let row = TableRow<TestTableViewCell>(item: TestData(title: "title"))
+        let row = TableRow<TestData, TestTableViewCell>(item: TestData(title: "title"))
        let sectionHeaderView = UIView()
        let sectionFooterView = UIView()
@ -162,7 +159,7 @@ class TableKitTests: XCTestCase {
        testController.tableDirector += section
        testController.tableView.reloadData()
-        XCTAssertTrue(testController.tableView.dataSource?.numberOfSections?(in: testController.tableView) == 1, "Table view should have a section")
+        XCTAssertTrue(testController.tableView.dataSource?.numberOfSectionsInTableView?(testController.tableView) == 1, "Table view should have a section")
        XCTAssertTrue(testController.tableView.dataSource?.tableView(testController.tableView, numberOfRowsInSection: 0) == 1, "Table view should have certain number of rows in a section")
        XCTAssertTrue(testController.tableView.delegate?.tableView?(testController.tableView, viewForHeaderInSection: 0) == sectionHeaderView)
@ -171,75 +168,26 @@ class TableKitTests: XCTestCase {
    func testRowBuilderCustomActionInvokedAndSentUserInfo() {
-        let expectation = self.expectation(description: "cell action")
+        let expectation = expectationWithDescription("cell action")
-        let row = TableRow<TestTableViewCell>(item: TestData(title: "title"))
+        let row = TableRow<TestData, TestTableViewCell>(item: TestData(title: "title"))
-            .on(TableRowAction(.custom(TestTableViewCellOptions.CellAction)) { (data) in
+            .action(TableRowAction(.custom(TestTableViewCellOptions.CellAction)) { (data) in
                XCTAssertNotNil(data.cell, "Action data should have a cell")
                expectation.fulfill()
            })
-        testController.view.isHidden = false
+        testController.view.hidden = false
        testController.tableDirector += row
        testController.tableView.reloadData()
-        let cell = testController.tableView.cellForRow(at: IndexPath(row: 0, section: 0)) as? TestTableViewCell
+        let cell = testController.tableView.cellForRowAtIndexPath(NSIndexPath(forRow: 0, inSection: 0)) as? TestTableViewCell
        XCTAssertNotNil(cell, "Cell should exists and should be TestTableViewCell")
        cell?.raiseAction()
-        waitForExpectations(timeout: 1.0, handler: nil)
+        waitForExpectationsWithTimeout(1.0, handler: nil)
    }
-    
+}
    func testReplaceSectionOnExistingIndex() {
        let row1 = TableRow<TestTableViewCell>(item: TestData(title: "title1"))
        let row2 = TableRow<TestTableViewCell>(item: TestData(title: "title2"))
        let section1 = TableSection(headerView: nil, footerView: nil, rows: nil)
        section1 += row1
        let section2 = TableSection(headerView: nil, footerView: nil, rows: nil)
        section2 += row2
        testController.tableDirector += section1
        testController.tableView.reloadData()
        let cell = testController.tableView.cellForRow(at: IndexPath(row: 0, section: 0)) as? TestTableViewCell
        XCTAssertTrue(cell?.textLabel?.text == "title1")
        testController.tableDirector.replaceSection(at: 0, with: section2)
        testController.tableView.reloadData()
       let cell1 = testController.tableView.cellForRow(at: IndexPath(row: 0, section: 0)) as? TestTableViewCell
        XCTAssertTrue(cell1?.textLabel?.text == "title2")
    }
    func testReplaceSectionOnWrongIndex() {
        let row1 = TableRow<TestTableViewCell>(item: TestData(title: "title1"))
        let row2 = TableRow<TestTableViewCell>(item: TestData(title: "title2"))
        let section1 = TableSection(headerView: nil, footerView: nil, rows: nil)
        section1 += row1
        let section2 = TableSection(headerView: nil, footerView: nil, rows: nil)
        section2 += row2
        testController.tableDirector += section1
        testController.tableView.reloadData()
        let cell = testController.tableView.cellForRow(at: IndexPath(row: 0, section: 0)) as? TestTableViewCell
        XCTAssertTrue(cell?.textLabel?.text == "title1")
        testController.tableDirector.replaceSection(at: 33, with: section2)
        testController.tableView.reloadData()
        let cell1 = testController.tableView.cellForRow(at: IndexPath(row: 0, section: 0)) as? TestTableViewCell
        XCTAssertTrue(cell1?.textLabel?.text == "title1")
    }
 }