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.

kmk/macros/simple.py

@@ -1,40 +1,13 @@
 import string
 
-from kmk.event_defs import (hid_report_event, keycode_down_event,
-                            keycode_up_event)
-from kmk.keycodes import Keycodes, Macro, RawKeycodes, char_lookup
+from kmk.keycodes import (Keycodes, Macro, RawKeycodes, char_lookup,
+                          lookup_kc_with_cache)
 from kmk.kmktime import sleep_ms
 
-kc_lookup_cache = {}
-
-
-def lookup_kc_with_cache(char):
-    found_code = kc_lookup_cache.get(
-        char,
-        getattr(Keycodes.Common, 'KC_{}'.format(char.upper())),
-    )
-
-    kc_lookup_cache[char] = found_code
-    kc_lookup_cache[char.upper()] = found_code
-    kc_lookup_cache[char.lower()] = found_code
-
-    return found_code
-
 
 def simple_key_sequence(seq):
     def _simple_key_sequence(state):
-        for key in seq:
-            if key.code == RawKeycodes.KC_MACRO_SLEEP_MS:
-                sleep_ms(key.ms)
-                continue
-
-            if not getattr(key, 'no_press', None):
-                yield keycode_down_event(key)
-                yield hid_report_event
-
-            if not getattr(key, 'no_release', None):
-                yield keycode_up_event(key)
-                yield hid_report_event
+        return seq
 
     return Macro(keydown=_simple_key_sequence)