- fix 2 warning in doctest
- change the minimum version of gym (to be aligned with openai baselines)
- change squeeze and reshape to flatten (related to #155). I think flatten is better.
* add_pybullet_ens_test
test on pybullet envs
modify some log config
* delete DS_Store file
* add pybullet_envs test
add HalfCheetahBulletEnv-v0 test
modify log config
* fix pep 8 errors
* add pybullet to dev
* delete a line
* by pass F401
* add log_interval to onpolicy_trainer
* add comments
* Update halfcheetahBullet_v0_sac.py
* update atari.py
* fix setup.py
pass the pytest
* fix setup.py
pass the pytest
* add args "render"
* change the tensorboard writter
* change the tensorboard writter
* change device, render, tensorboard log location
* change device, render, tensorboard log location
* remove some wrong local files
* fix some tab mistakes and the envs name in continuous/test_xx.py
* add examples and point robot maze environment
* fix some bugs during testing examples
* add dqn network and fix some args
* change back the tensorboard writter's frequency to ensure ppo and a2c can write things normally
* add a warning to collector
* rm some unrelated files
* reformat
* fix a bug in test_dqn due to the model wrong selection
