v0.2.0

Enhancements:

• Agents
  • REINFORCE #81
• Training helper functions
  • Hook functions #85
  • Add more columns to scores.txt: episodes, max and min #78
  • Improve naming of the output directories #72 #77
  • Use logger instead of print #60
  • Make train_agent_async's eval_interval optional #93
• Misc
  • Use Gumbel-Max trick for categorical sampling in GPU #88 #104
  • Remove test arguments from links (use chainer.config instead) #100

Fixes:

• Fix argument names #86
• Fix option names #71
• Fix the issue that average_loss is not updated #95

Dependency changes:

• Switch to Chainer v2 #100

Changes that can affect performance:

• train_agent_async won't decay learning rate by default any more. Use hook functions instead.