Merge master and reconcile tapdance with splits

This took a bit of brain surgery to firmware.py that deserves its own
commit message beyond the default merge commit message - tl;dr though,
it appears to work fine.

user_keymaps/klardotsh/klarank_featherm4.py

@@ -9,6 +9,7 @@ keyboard = Firmware()
 
 keyboard.debug_enabled = True
 keyboard.unicode_mode = UnicodeModes.LINUX
+keyboard.tap_time = 750
 
 emoticons = cuss({
     # Emojis