1.0.20 - room reloading

Additions:

• Room reloading! You can now mark a room for live reload and have it restarted (immediately or at request) whenever you change it in the project (be that GMS1, GMS2, or using custom editors).

Improvements:

• Documentation now has an option of night mode (and a few other stylistic tweaks).

Fixes:

• Fixed 0x hexadecimal notation, for real this time.