- Fixed infinite loop bug in peephole IR optimizations
- Fixed peephole bug wrt dead code and phi nodes resulting in
  illegal IR
- Fixed bug wrt arg moves
- Eliminated unnecessary arg spills
	- update TODO Tom
	- style tweaks in lib/draw
	- accept r,g,b in setColor()
	- added examples/drawing
Merge branch 'dev-tom' of https://github.com/teebrz/Higgs into dev-tom