Update wormholes to the module naming convention.
- register = called before game is loaded
- init = called after game is loaded
- update = called after the turn, before reports are written
Merge pull request #71 from badgerman/module-rename

Update wormholes to the module naming convention.
Merge pull request #72 from badgerman/master

fix two crashes, and undead heroes
Merge remote-tracking branch 'eressea/master'