Release 0 | Beta 2 | Development 3 | Experimental 0

* Added GUITextBox
* Added MaskUtils
* Added GUITextBoxCursor

* Added the method restart() in Timer
* Added moving of cursor using arrow keys in
  GUITextBox
* Added moving of cursor by clicking in
  GUITextBox

* Fixed bug: GUIRadioCheckBox didn't work properly
* Fixed spelling: keyChatacter should have been
                  keyCharacter in KeyboardEvent