initial version of the collisionfilter done
beginning to improve worldtreenode
bullets ignore shooter
fixed collisionfilterable
added missing files for collision_filter
fixed bit-querying
fixed indentation, cast of worldobject to collisionfilterable and tests
Merge branch 'master' into collision_filter
merge with master
merge with master, implemented some PR suggestions
Merge pull request #162 from voxelinc/collision_filter

Collision Filter