QuadDraw revisited - drawing program work in progress

[Dav]

@PhilOfPerth: Thanks for the suggestion.  I'll work on a multi-livel undo.  You can also press ESC to end the program.

@James D Jarvis:  Cool.  I like it.  May I add those in the next version? I was going to add D for selecting a draw color.  The Eraser idea actually makes a neat effect - press and hold E while drawing and it draws a dotted line.  Thanks for your testing.

@euklides:  Smooth is still there, it was renamed to Antialiasing.  PRESS A to do that now.  I needed S to do the SAVE.  I'm planning on adding L for LOAD an image.

I may change the menu to buttons (keeping the keyboard shortcuts too), also show the current Brush & Fill colors somehow.

Thanks everybody for your feedback.

- Dav