Update CHANGELOG.md for #1609 (#1764)
Update CHANGELOG.md for #1609 (#1764)


Lucashuang0802/JSQMessagesViewController,TeletronicsDotAe/JSQMessagesViewController,jessesquires/JSQMessagesViewController,derekjcarter/JSQMessagesViewController,preeo/JSQMessagesViewController,jessesquires/JSQMessagesViewController,adozenlines/JSQMessagesViewController,sebastianludwig/JSQMessagesViewController,adozenlines/JSQMessagesViewController,derekjcarter/JSQMessagesViewController,preeo/JSQMessagesViewController,TeletronicsDotAe/JSQMessagesViewController,TeletronicsDotAe/JSQMessagesViewController,Lucashuang0802/JSQMessagesViewController,sebastianludwig/JSQMessagesViewController,Lucashuang0802/JSQMessagesViewController,preeo/JSQMessagesViewController,perpetio/JSQMessagesViewController,derekjcarter/JSQMessagesViewController,perpetio/JSQMessagesViewController,sebastianludwig/JSQMessagesViewController,perpetio/JSQMessagesViewController,adozenlines/JSQMessagesViewController