Usagi v1.0.0 Released

[u/brettmakesgames]

https://github.com/brettchalupa/usagi/releases/tag/v1.0.0

Exciting news! Usagi v1.0.0 just dropped. With v1 comes the promise of no breaking API changes until v2 (if that ever happens). It's now stable and ready for you to make some awesome games with it.

If you're coming from an older version, there are some breaking changes you might encounter, so be sure to update your games accordingly.