0.12.0: Better multiplayer and audio

1. Multiplayer connector got a big rewrite. It's now in Rust and with completely new UX addressing all feedback we've collected from playtests.
2. Audio got new modulators (ADSR, Sawtooth, and Square), a lot of bugfixes, and a new modulation API.
3. Audio bindings are now available in all SDKs. Which means every non-experimental SDKs should now be complete.
4. New graphics functions: draw_sub_tile for tiling an area with a sprite and draw_nine_slice for tiling with 9-slice.
5. Completely new game menu UI.

Update to the latest release:

bash -c "$(curl https://fireflyzero.com/install.sh)"

Multiplayer connector:

Game menu:

Full Changelog: 0.11.0...0.12.0