Heal at store

Swapping guns switches player animations
Heal available in store
Made it slightly more difficult to accidently re-enter store
Store UI displays correctly
Keyboard weapon swapping (1 for pistol, 2 for shotgun)
Fixed a bunch of bugs about in-weapon ammo on switching
Hide HUD on open Store
Wind SFX
Final quest added (triggers victory)
Prospector & Ghostly gunfighter quests have correct prereqs
Undertaker vfx and sfx
Fixed not all loot drops from occurring