WINTERMUTE: Make _parentNotify private in UIObject
WINTERMUTE: Keep _back private in UIObject
WINTERMUTE: Avoid feeding setWidth negative values
WINTERMUTE: Keep attributes private in UIEdit
WINTERMUTE: Keep some attributes private in UIButton
WINTERMUTE: Setters/getters for UIButton
WINTERMUTE: Make sprites private in UIButton
WINTERMUTE: add UIButton::setTextAlign
WINTERMUTE: s/put/set/ in setters
WINTERMUTE: const'ify getters
WINTERMUTE: Formatting