master
fix cmake build see also https://github.com/MicrosoftDocs/cpp-docs/issues/2378
Create LICENSE.txt
Update Bullet URL in copyright statements
Extras/VHACD/inc/vhacdMutex.h: fix musl build
rename tiny_obj_loader.h namespace to bt_tinyobj to avoid conflicts
added default ON values for cmake OPTIONS to fix linker errors on ci builds
add the 'extras' and Bullet 2 tests, to make it easier to create a new intermediate release
add premake4.lua build for BulletRobotics target, C++ API, similar to PyBullet. Use BulletRobotics target for App_HelloBulletRobotics (without GUI) and App_RobotSimulator