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

examples/agents/cem.py

@@ -1,13 +1,9 @@
 from __future__ import print_function
 
 import gym
-from gym import wrappers
-import logging
+from gym import wrappers, logger
 import numpy as np
-try:
-    import cPickle as pickle
-except ImportError:
-    import pickle
+from six.moves import cPickle
 import json, sys, os
 from os import path
 from _policies import BinaryActionLinearPolicy # Different file so it can be unpickled
@@ -48,8 +44,7 @@ def do_rollout(agent, env, num_steps, render=False):
     return total_rew, t+1
 
 if __name__ == '__main__':
-    logger = logging.getLogger()
-    logger.setLevel(logging.INFO)
+    logger.set_level(logger.INFO)
 
     parser = argparse.ArgumentParser()
     parser.add_argument('--display', action='store_true')