Another Tootin' Update for Guncho

So this update should make the game on par with original 7DRL gamejam game. I'm surprised I didn't run out of tokens. Improvements include:

• AI: Gun men now shoot TNT barrels if you're next to one
• FEATURE: Punching bandits now stun them for a turn
• FEATURE: Bullet hail now breaks wooden fences
• FEATURE: Player and bandits behind brick walls will now protect them from explosions (the wall will however be destroyed)
• GFX: Added background clutter
• GFX: Tweaked sapper and trapper sprites so they are more different from each other
• UI: Revolver actions are now properly labeled fire/reload depending on state of chamber.
• GFX/UI: Dynamite sticks now have a particle fizz on last turn before it blows up
• MUSIC: Added Bonanza as victory tune

Enjoy your spaghetti western roguelike, y'guys!