Tweaks font sizes for scene.
Adds BPDots font, CC-BY-ND.
Added working DotMatrix display.

Display works, with callbacks that fire after animation completes.
Changes dot matrix font for a better one. Changes Timer.now to an
attribute instead of a function. Updated on every tick.
DotMatrix renders properly now.

Small improvements to DotMatrix and SevenSegment. Updates level2.
Adds level 1.

Very simple level based on components of level 2.
Adds bits for a rotary switch.

Adds sprites for a rotary switch and a dial.
BIG BAD SUMMISSION TIME!