TODO:
	- complete callback system
	- perldoc everything
	- complete Tests
		* Combobox
		* TextBlock
		* Tooltips
		* Toplevel_Widget
		* Tree
		* Window
		* Widget
	- Check for memory usage (I'm not sure if we're leaking or not,
	  need to do some tests for that)
	- Fix Combobox append functions (waiting for some functionality in etk)
	- Image new from data
	- fix DND
	- fix Etk::Simple ( image new_from_file requires a key now )

BUGS:

Pending:
	-etk_canvas.h
	-dnd


