update with qmk master (#2887)

* add splitography

* trim keymap.c

* add Makefile

* rename Makefile to rules.mk

* thumb key definition

* thumb key definition

* thumb key definition

* blue/orange layer swap, double qwerty steno exit

* fix TxBolt 1-3 key chord suppression (PREVENT_STUCK_MODIFIERS)

* add audio control

* beakl 8+10, dvorak (standard and splitography wide variant)

* beakl 8+10, dvorak (standard and splitography wide variant)

* shift layer home blocks

* regex layer key changes

* tilde align symbol navigation and regex layer

* splitography/planck code break out into common .h segments

* splitography/planck code break out into common .h segments

* splitography common library

* splitography common library

* splitography beakl altgr home row

* updating with qmk master

keyboards/planck/keymaps/sdothum/readme.md

@@ -0,0 +1,10 @@
+# The sdothum extended Default Planck Layout
+
+- Colemak-DH layout layer with shift/tab key overlays
+- Number and symbol/function key layer
+- Hexadecimal keypad layer
+- Navigation keypad layer
+- Dynamic macro layer
+- Autocompletion tap key pairs (),[],{}
+- Normalized enter and esc key position across keyboard layers
+- Extensive use of tap keys