Add a changelog entry for #57

Author: BasThomas

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 - **Breaking Change:** Added a new delegate method to `MessageTextViewListener`, `func willChangeRange(textView: MessageTextView, to range: NSRange)` which allowed for the observation of text range changes such that the entire autocomplete string is deleted rather than character by character. [#15](https://github.com/GitHawkApp/MessageViewController/pull/15) by [@nathantannar4](https://github.com/nathantannar4)
 
+- Added an optional `accessibilityLabel` parameter to `setButton`, and using the supplied title or image label by default. [#57](https://github.com/GitHawkApp/MessageViewController/pull/57) by [@BasThomas](https://github.com/BasThomas)
+
 ## Removed
 
 - Removed a tap gesture recognizer on the message view that would call `becomeFirstResponder()` on the text view. [#9](https://github.com/GitHawkApp/MessageViewController/pull/9) by [@rizwankce](https://github.com/rizwankce)