set estimatedHeight and defaultHeight as static properties

Demo/Classes/Presentation/Views/AutolayoutTableViewCell.swift

@@ -19,13 +19,13 @@ class AutolayoutTableViewCell: UITableViewCell, ConfigurableCell {
     @IBOutlet var titleLabel: UILabel!
     @IBOutlet var subtitleLabel: UILabel!
     
+    static var estimatedHeight: CGFloat? {
+        return 500
+    }
+    
     func configure(with string: T) {
         
         titleLabel.text = LoremIpsumTitle
         subtitleLabel.text = LoremIpsumBody
     }
-    
-    static func estimatedHeight() -> CGFloat? {
-        return 500
-    }
 }

Demo/Classes/Presentation/Views/NibTableViewCell.swift

@@ -13,11 +13,11 @@ class NibTableViewCell: UITableViewCell, ConfigurableCell {
     
     @IBOutlet weak var titleLabel: UILabel!
     
+    static var defaultHeight: CGFloat? {
+        return 100
+    }
+    
     func configure(with number: Int) {
         titleLabel.text = "\(number)"
     }
-    
-    static func defaultHeight() -> CGFloat? {
-        return 100
-    }
 }

Sources/ConfigurableCell.swift

@@ -21,17 +21,18 @@
 import UIKit
 
 public protocol ReusableCell {
-    
+
     static func reusableIdentifier() -> String
     static func nib() -> UINib?
 }
 
 public protocol ConfigurableCell: ReusableCell {
-    
+
     associatedtype T
-    
-    static func estimatedHeight() -> CGFloat?
-    static func defaultHeight() -> CGFloat?
+
+    static var estimatedHeight: CGFloat? { get }
+    static var defaultHeight: CGFloat? { get }
+
     func configure(with _: T)
 }
 
@@ -48,11 +49,16 @@ public extension ReusableCell where Self: UITableViewCell {
 
 public extension ConfigurableCell where Self: UITableViewCell {
     
-    static func estimatedHeight() -> CGFloat? {
-        return UITableViewAutomaticDimension
+    static var estimatedHeight: CGFloat? {
+        get {
+            return UITableViewAutomaticDimension
+        }
+        
     }
     
-    static func defaultHeight() -> CGFloat? {
-        return nil
+    static var defaultHeight: CGFloat? {
+        get {
+            return nil
+        }
     }
 }

Sources/TableRow.swift

@@ -59,11 +59,11 @@ public class TableRow<ItemType, CellType: ConfigurableCell where CellType.T == I
     }
     
     public var estimatedHeight: CGFloat? {
-        return CellType.estimatedHeight()
+        return CellType.estimatedHeight
     }
     
     public var defaultHeight: CGFloat? {
-        return CellType.defaultHeight()
+        return CellType.defaultHeight
     }
     
     public var cellType: AnyClass {