Sound branch added
Initial sound work, propertychangelistener and support in world
Initial sound work, propertychangelistener and support in world
Sound for powerUps implemented (Different for self, everyone etc.)
Minor edit in propertyname
Player dies with sound
World unaware of sound, moved to Game
Update README.md

with slick-util.jar instructions
Minor changes
Sound merged with development
Merge branch 'development' of https://github.com/helmertz/achtung-die-klonen into development