TODO:

Migrate rain logic to shaders that operate on double buffer RTTs

Reach out to Ashley's partner about producing sounds

Much later:
  Optimizations
    calculate texture derivatives on CPU, pass in as a uniform
    simpler bloom replacement
  Dissolve threejs project into webgl project
    Maybe webgl2 project?
  Deluxe
    Flashing row effect?
      https://youtu.be/z_KmNZNT5xw?t=16
    Square event?
      https://youtu.be/ngnlBZNuVb8?t=200
      https://youtu.be/721sG2D_9-U?t=67
  More patterns?
    Symbol duplication is common