TextInput: always uses justify alignment for text editors that are multiline (that's basically only StageTextTextEditor)
BitmapFontTextRenderer: some optimizations and fixed height measurement when the text length is 0
BitmapFontTextEditor: very early version of a text editor that renders bitmap fonts
TextInput: no longer sets isQuickHitAreaEnabled because text editors that are purely Starling display objects may need to receive touches. themes may decide to set it instead if they use text editors that don't need to receive touches.
TextInput: accounts for icon when passing touch position to text editor's setFocus()
BitmapFontTextEditor: better integration with TextInput with focus events and touches