0.8.1 Demo Patch Notes

Hello! Next weekend we're going to be in Kyoto, Japan, for the Bitsummit. What better occasion to add Japanese localization in the demo? Here’s a list of the major changes: ⁃ Japanese localization! The demo has been fully localized in Japanese. ⁃ Characters arenas! George and Wukong now have their unique arenas. ⁃ Customizable boards! We've added an option to play with classic, clear, or dark board. Choose your favourite! ⁃ QoL improvements, AI improvements, and bug fixes.