Cleanup, removal of unmaintained code (#836)

* add dtype to Box

* remove board_game, debugging, safety, parameter_tuning environments

* massive set of breaking changes
- remove python logging module
- _step, _reset, _seed, _close => non underscored method
- remove benchmark and scoring folder

* Improve render("human"), now resizable, closable window.

* get rid of default step and reset in wrappers, so it doesn’t silently fail for people with underscore methods

* CubeCrash unit test environment

* followup fixes

* MemorizeDigits unit test envrionment

* refactored spaces a bit
fixed indentation
disabled test_env_semantics

* fix unit tests

* fixes

* CubeCrash, MemorizeDigits tested

* gym backwards compatibility patch

* gym backwards compatibility, followup fixes

* changelist, add spaces to main namespaces

* undo_logger_setup for backwards compat

* remove configuration.py

setup.py

@@ -8,11 +8,9 @@ from version import VERSION
 # Environment-specific dependencies.
 extras = {
   'atari': ['atari_py>=0.1.1', 'Pillow', 'PyOpenGL'],
-  'board_game' : ['pachi-py>=0.0.19'],
   'box2d': ['Box2D-kengz'],
   'classic_control': ['PyOpenGL'],
   'mujoco': ['mujoco_py>=1.50', 'imageio'],
-  'parameter_tuning': ['keras', 'theano'],
 }
 
 # Meta dependency groups.