v2.2.0

What's Changed

• [Animal Shogi] Modify the visualizer of animal shogi. by @KazukiOhta in #1208
• [Animal Shogi] Modify the move of GOLD in animal_shogi.py by @KazukiOhta in #1209
• Update README.md by @KazukiOhta in #1211
• [Animal Shogi] Update documents by @sotetsuk in #1212

Full Changelog: v2.1.2...v2.2.0