half_tael_DQN v4.5: Refactor to work with Anita_v2.0 + Proper documentation.

Acknowledgment

Henry Z. (@choh )

Technical Updates:

• ✨ Supported feature to generate dynamic action_list in FX_env.py base on input account currencies (self.TI_train.all_currency_list).
• ✨ Developed ./Anita — a.k.a. anita_v2.0 — to influent the model reward according to persona-driven adjustment (demonstrative, only one placeholder Anita_Trait method is implemented).
• ♻️ Refactored half_tael_4.0 to work with anita_v2.0.
• 🐛 Bugfix on crashing when output dir does not exist (in model_interface.py for tensorboard_logs and trade_logs, in oanda_interface.py for raw_data CSV files, and in trade_interface.py for arena_data CSV files.
• 🐛 Bugfix on crashing during pd.concat in trade_interface.py when raw_data DataFrame has duplicated index (now dropped).

Chore:

• 🐛 📚 Fixed incorrect Run instruction in README.md.
• 🔨 📚 Updated README.md to add info regarding anita_v2.0 and Graphen.ai.
• 🔨 🔰 📚 Update CONTRIBUTING.md to untracked future changes to oanda_config.py
• 🔨 🔰 📚 Update User Manual for trade_interface.py to add documentation regarding CSV output flags.
• ✨ 🔰 📚 Added User Manual for anita_interface.py.