Added a rectangle span.
added a grid layout that evenly distributes components
added new layout for attachments and started to integrate thumbnails
introduced a light-weight class to realise a set of radio buttons without adding a separate view
integrated new relic update
fixed RectangleSpan display
extended options for ExclusiveButtons

- added onCheckedChangeListener for all buttons
- added a flag that allows elements to be deselected
added a compatibility mode for measureWidthLargestChild
added a compound button whose button image can be aligned with text (centred)
bug fix: using observable loader
Added views that accept custom ttf typefaces
Added views that accept custom ttf typefaces
added views for setting custom fonts
FontIconView and FontIconDrawable for ttf icons
additional constructors
moved FontawesomeDrawable to views lib
constants for FontIconView character
fixed implementation to respect bounds
fixed empty notification appearance
refactoring