Now supports browser-based games

Hi, this is just a brief update for posterity (I honestly hope no one is actually eagerly awaiting these), but with the second subminor version (0.0.2) I've added support for browsers through Pyodide.  There have been numerous other changes throughout the past year, but it feels weird to bump anything more than this since the engine is...not in an incredibly functional state.  I think 0.1.0 will probably be once I actually implement cross-platform support using something like Electron: then it will feel like a "real" engine!