Did a lot of health and speed changes to all the Haters.  Changed SingleshotWeapon.lua to shoot faster (also modified Inventory.lua and Shop.lua).  Changed flow of screens so that Play button leads to Shop and Back button in Shop leads to play game (PlayButtonMediator.lua and MenuEquip.lua).  Added an extra field for enemies in AIDirector.lua so that I can figure out when to get rid of them after they go off screen.
Merge branch 'master' of https://github.com/encephalopathy/wepwep

Conflicts:
	branches/pewpew_corona_port/com/Inventory.lua
	branches/pewpew_corona_port/com/game/enemies/Hater_Carrier.lua
	branches/pewpew_corona_port/com/game/enemies/Hater_Normal.lua