Implement new enemy sprite for RPG phase
Implement new cuttable tree sprite
Add black pixel sprite
Merge branch 'master' of https://github.com/2machten/pixel-evolution

Conflicts:
	js/game.js
Merge branch 'master' of https://github.com/2machten/pixel-evolution
spacebar to dismiss messages
Fix a lot of broken sprite loads
Fix spawning pixels and increased the black pixel spawn rate (very ,very, ugly)
Added fragile tree collision handler.

Fixes #52 Cuttable tree's collider: message: "if i had an axe i could
chop down this tree..."
Merge branch 'master' of github.com:2machten/pixel-evolution