pybullet.getAABB and getAPIVersion

fix btMultiBody::getLinkCollider
bump up Bullet C-API version

examples/SharedMemory/PhysicsClientC_API.h

@@ -57,6 +57,8 @@ int b3GetStatusActualState(b3SharedMemoryStatusHandle statusHandle,
                            const double* actualStateQdot[],
                            const double* jointReactionForces[]);
 
+int b3GetStatusAABB(b3SharedMemoryStatusHandle statusHandle, int linkIndex, double aabbMin[3], double aabbMax[3]);
+
 ///If you re-connected to an existing server, or server changed otherwise, sync the body info and user constraints etc.
 b3SharedMemoryCommandHandle b3InitSyncBodyInfoCommand(b3PhysicsClientHandle physClient);