Initial Commit
Initial commit of "Learn Swift" project: Pixel Drawer 3000

Pixel Drawer 3000 is a working name, and mainly chose for its
coolness. PD3 aims to create a usable drawing experience with
particular support for pixel art creations (images, gifs,
animations). I am departing from my Android bubble to take a
stab at the Mac OS world, so this should be a learning experience.

Inital features include:
1. Brush size changer
2. Ability to change brush and background colours
3. "Save as..." functionality
4. Undo / Redo
5. Clear canvas

Note there is a potential bug in undo / redo, investigations are
ongoing.
Merge branch 'master' of https://github.com/toastitos/Pixel-Drawer-3000