bump version

Swift/2.2, clear prototype cell heights

README.md

@@ -4,7 +4,7 @@
 	<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_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-1.2.0-blue.svg" alt="CocoaPods compatible" /></a>
+	<a href="https://cocoapods.org/pods/tablekit"><img src="https://img.shields.io/badge/pod-1.2.1-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>

Sources/TableDirector.swift

@@ -254,7 +254,7 @@ public class TableDirector: NSObject, UITableViewDataSource, UITableViewDelegate
     }
     
     public func clear() -> Self {
-        
+        heightStrategy?.invalidate()
         sections.removeAll()
         return self
     }

TableKit.podspec

@@ -2,7 +2,7 @@ Pod::Spec.new do |s|
     s.name                  = 'TableKit'
     s.module_name           = 'TableKit'
 
-    s.version               = '1.2.0'
+    s.version               = '1.2.1'
 
     s.homepage              = 'https://github.com/maxsokolov/TableKit'
     s.summary               = 'Type-safe declarative table views. Swift 2.2 is required.'