Add database wrappers
Remove factories
Add 'final' modifier to input and screen class
Move thread starting methods
Add comments to IColor interface
Add comments to IPaint interface
Add comments to ISound interface
Add comments to IMusic interface
Add comments to IImage interface
Add comments to ISprite interface
Add comments to ITextBox interface
Add comments to IFont interface
Add comments to IInput interface
Add comments to IColumn interface
Add comments to IRow interface
Add comments to ITable interface
Add comments to IDatabase interface
Allow a value being only 0 or 1.
Add comments to AbstractGameActivity
Add comments to IScreen interface