Changed a private method to protected to allow classes to extend Container and do their own viewport magic.
Removed setAlpha() calls which can be potentially expensive during scrolling.
Added a touch mode changed listener.
Changed the interface TouchModeListener to OnTouchModeChangedListener and its method touchModeChanged(int) to onTouchModeChanged(int).
Merge pull request #46 from jerrellmardis/master

Removed setAlpha() calls which can be potentially expensive during scrolling
Some UI tweaks for DefaultSectionAdapter