1 creep starts on each edge
when all enemies are dead, we go to game over. This fixes issue #43 (that we are able to detect the condition at all), but we still need to do something to distinguish winning from losing.
updating version number for release v0.5
menu fix
Merge branch 'master' of https://github.com/nczempin/Turris-Monacoae
update version number
Merge branch 'master' into nczempin

Conflicts:
	enemy.lua