OMEGA REFACTOR! Perf grind basically complete.

Resolves #70, Resolves #67

Still needs some regression testing in general, and a definite
regression is that rotary encoders are no longer (for the immediate time
being) supported.

Moves to a much simpler internal state tracking system, and FAR lighter
matrix scan.

Removes MicroPython support entirely.

setup.cfg

@@ -6,6 +6,8 @@ per-file-ignores =
 # Allow crazy line lengths, unused variables, and multiple spaces after commas in lists (for grid alignment)
 	user_keymaps/**/*.py: F401,E501,E241
 	tests/test_data/keymaps/**/*.py: F401,E501
+# Forgive me for my RAM hack sins
+	kmk/firmware.py: I001,I003,I004,F401
 
 [isort]
 known_third_party = analogio,bitbangio,bleio,board,busio,digitalio,framebuf,gamepad,gc,microcontroller,micropython,pulseio,pyb,pydux,uio,ubluepy,machine,pyb,uos