Made sure all resources are no longer marked as purgeable so they stay
in memory (not that we were running out), also cleaned up some other
code issues.
I've added a new level select scene after picking your set, and I've
updated the engine to store the result of each puzzle separately. The
level select is paged (can't fit all 50 on one screen), so needed to add
a new "previous button" graphic.
Added confirmation prompts, so I can prompt before quitting, and for a
new menu option to clear your scores if you want to reset your progress.
Progress is still not persisted when you exit, as I haven't figured out
how to do that yet.
I've also rearranged the title screen a bit.
I've imported some of the "character" images from ArduLO, converted to
GIFs because they're easier to work with. They've been imported into a
new Bitmaps structure so they only need to be loaded once at app start.
I've also cleaned up some of the drawing code, and created a series of
helpers for dividing Rects into a 3x3 grid, to make it easier to define
the layout. I've also stubbed out "theme-support". :)
* Added a proper event loop
* Added minimal menu bars
* Added about menu
* GameWindow initializes a GameEngine (even if you can't play it yet)
* Updated variable naming conventions
* Added base "Hello MacLO" app
* Added first attempt at porting game engine from [ArduLO](https://github.com/jonthysell/ArduLO)
* Added README.md and LICENSE.md
