Add CHANGELOG entry for #391`

CHANGELOG.md

@@ -8,6 +8,18 @@ The changelog for `MessageKit`. Also see the [releases](https://github.com/Messa
 
 ### Changed
 
+- **Breaking Change** Removed the generic constraint `<ContentView: UIView>` from `MessageCollectionViewCell`.
+[#391](https://github.com/MessageKit/MessageKit/pull/391) by [@SD10](https://github.com/sd10).
+
+- **Breaking Change** The `configure(message:indexPath:messagesCollectionView)` method of `LocationMessageCell`,
+`MediaMessageCell`, `TextMessageCell`, and `MessageCollectionViewCell` has been replaced by methods that take the
+delegate return values as arguments.
+[#391](https://github.com/MessageKit/MessageKit/pull/391) by [@SD10](https://github.com/sd10).
+
+- **Breaking Change** The `contentView` property has been renamed to `imageView` for `LocationMessageCell` and `MediaMessageCell`
+and `messageLabel` for `TextMessageCell`.
+[#391](https://github.com/MessageKit/MessageKit/pull/391) by [@SD10](https://github.com/sd10).
+
 - **Breaking Change** Changed the name of  `MessageInputBar`'s property `maxHeight` to `maxTextViewHeight` as the property is the max height the `InputTextView` can have, not the `MessageInputBar` itself.
 [#380](https://github.com/MessageKit/MessageKit/pull/380) by [@nathantannar4](https://github.com/nathantannar4).
 

Sources/Views/Cells/LocationMessageCell.swift

@@ -26,6 +26,7 @@ import UIKit
 import MapKit
 
 open class LocationMessageCell: MessageCollectionViewCell {
+
     open override class func reuseIdentifier() -> String { return "messagekit.cell.location" }
 
     // MARK: - Properties

Sources/Views/Cells/MediaMessageCell.swift

@@ -25,6 +25,7 @@
 import UIKit
 
 open class MediaMessageCell: MessageCollectionViewCell {
+
     open override class func reuseIdentifier() -> String { return "messagekit.cell.mediamessage" }
 
     // MARK: - Properties