Avoid crash in BulletWorldImporter, ignoring 'invalid' constraints between two static bodies
Use a bitfield for btCollisionObject::CollisionObjectTypes (to allow custom types that are derived from build-in types such as btRigidBody)
Revert/improve softbody debug rendering
Added Bullet SAP/MultiSAP support by Erwin Coumans (BulletSAPCompleteBoxPruningTest.*)
AABB tree broadphase by Nathanael Presson (btDbvt.*, DbvtTest.*)