Start version 1.0.0
Make project buildable on JDK 6
Use artifactId for log prefix tag
Use groupId/artifactId for prefs name
Remove unused import
Pull up drawCentred to Screen
Dispose more resources on leaving screen
Build a single texture page by default
Set version 1.0.0.RELEASE

This is a lightly polished version of the base code used for LD 27.