move status bar notification handling to keyboard controller
refactor keyboard delegate/notification methods to single notify helper method
update collection view docs
remove status bar notifications from keyboard controller, re-add to view controller. fix in-call status bar layout issues. close #434
remove duplicate layout constraints in xibs. close #264
version nums
fix import
adjust toolbar constraints
fix demo
fix toolbar constraint issues and button widths not setting properly. fixes #460
move collection view delegate and data source definitions to their own header files to clean up collection view header.
move JSQMessagesCollectionViewCellDelegate implementation from controller to collectionView
reset cell text on prepareForReuse. #316
improve cell selection and menu handling. close #261
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move UIMenuController handling from cell to collectionView. fix #458. fix #254. close #463. ref: #393.
Merge branch 'newMenuController' into develop
remove dead code
expose cell properties messageBubbleContainerView and avatarContainerView
refine UIMenuController display. #458, #254, #463, #393