[Tetris AI] TETR.IO

The main speed bottleneck is transferring moves between the browser and the local cold clear instance. The second speed bottleneck is at the highest setting, soft drop takes 1 frame for the piece to hit the ground. TETR.IO's input system is effectively event-based, so Cold Clear hypertaps the entire piece movement (except soft drops) in a single frame. TASing TETR.IO wouldn't actually be interesting; the input system can handle arbitrarily many inputs in a single frame, including multiple piece placements. In theory, the fastest 40 line time is 1 frame and Blitz can be played to any arbitrary score (assuming javascript math allows it).

Cold Clear's source code: github.com/MinusKelvin/cold-clear