fix travis
improve KVO. better handle add/remove observers. close #285
fix bubble glitchy “bounce” on view appear and swipe back/forward in nav controller.
fix #368
fix issue where load earlier messages header or typing indicator would not appear.
don’t auto scroll when showing typing indicator. update docs for typing indicator footer and load messages header.
improve swipe back keyboard animation using view snapshot.
fix header/footer background colors
fix issue where header/footer failed to appear when springiness is enabled. close #409
version nums
update demo
Fix crash on async message fetch
Merge pull request #415 from piercifani/master

Fix crash on async message fetch. close #414
version nums
Update README.md