Add support for millisecond delays within a macro sequence

kmk/common/macros/simple.py

@@ -2,13 +2,18 @@ import string
 
 from kmk.common.event_defs import (hid_report_event, keycode_down_event,
                                    keycode_up_event)
-from kmk.common.keycodes import Keycodes, char_lookup
+from kmk.common.keycodes import Keycodes, RawKeycodes, char_lookup
 from kmk.common.macros import KMKMacro
+from kmk.common.util import sleep_ms
 
 
 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()