* Move tests to root with automatic PyCharm import refactoring. This will likely fail some tests
* Changed entry point for a registration test env.
* Move a stray lunar_lander test to tests/envs/...
* black
* Change the version from which importlib_metadata is replaced with importlib.metadata. Also requiring installing importlib_metadata for python 3.8 now.
???????????
* Undo last commit
* Moved all (?) tests to gym/tests
* flake8
* Move all the tests into gym/gym/tests, this might fix all the import errors... hopefully
* Move unittests back to envs
* Fix unittest again
* black
* Fix to one test due to new paths
* Add test for HandReach-v0 serialization
* Fix HandReach-v0 serialization
* Add test_{manipulate,manipulate_touch_sensors}.py
* Fix v2 -> v3 mujoco test naming
* Skip hand tests if `skip_mujoco`
* Fix v2 to v3 conversion test naming
* Use pytest.mark.skipif instead of unittest.skipIf
* SKIP_MUJOCO_MESSAGE -> SKIP_MUJOCO_WARNING_MESSAGE rename
* fix skipif argument name for hand serialization tests
