Happenlance v1.01a

Happenlance v1.01a:

- Clarified some geometry in ALPINIST
- Removed some confusing wood in ONE-MAN ARMY
- Fixed particles often not appearing
- Fixed several glitches in world geometry
- Show chapter names for player 2 in co-op
- Save chapter unlocks for player 2 in co-op
- Fix minor PvP bugs
- Small changes to credits