Version 6.4α - Even Less Lag™, Gyro Toggle, Rumble Fix
An alpha (α) release of v6.4 - primarily to push the improved rumble out. This version gets rid of the annoying high-pitched rumble sounds that occurred at certain amplitudes.
α is because there is an "Add Controllers" option that hasn't been fully tested, but should allow (at least in theory) to add 3rd party Joycons and Pro Controllers.