2.86
fix many warnings remove btMultiSapBroadphase.* make collisionFilterGroup/collisionFilterMark int (instead of short int)
Preliminary working version of TinyRenderer for standalone demos, it works without OpenGL dependency now, so it runs in the cloud :-) Add scaling support for TinyRenderer, remove some un-used normal mapping in TinyRenderer shader, expose light_dir_world, remove accidental hard-coded path in tga write_tga_file, Fix InverseDynamicsExampleCreateFunc, enum has to start at 0
prepare robotics learning examples, see examples/RoboticsLearning/b3RobotSimAPI.h prepare compliant contact work, urdf loading of parameters (see data/cube.urdf)