Update collection view insets and scroll to bottom when textView size changes
Only scroll to bottom on textview size changes when automaticallyScrollsToMostRecentMessage is set
Merge pull request #233 from andrewchae/version_5_offsets

Update collection view insets and scroll to bottom when textView size changes
improve rotation handling
clean up
data source docs
collection view delegate docs
collection view docs
collection view cell docs
toolbar docs
toolbar content view docs