Add satan keymap: HHKB-alike based on dbroqua's, with mouse functionality (#1948)

* Add satan keymap: HHKB-alike based on dbroqua's, with mouse functionality and without LED functionality

* move mouse layer to DOUBLE_HOLD, add UTIL layer for TRIPLE_HOLD

- UTIL layer
    - currently has "RESET" key and nothing else.
    - functionality otherwise covered by bootmagic should go here

- small bugfix: dispatch of [QTY]_HOLD should be based on range tap count
  falls in, not exact count.

1 files changed, 23 insertions, 0 deletions

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+# dkrieger HHKB like Layout
+
+Base derived from dbroqua (special thanks)
+
+Based on HHKB with the following [dip switches][1] engaged:
+
+- SW3: delete key -> backspace
+- SW5: swap alt and meta keys
+- SW2: Mac Mode (partial implementation, includes media keys
+    - Note: this was copied from dbroqua, there seem to have been some
+      modifications from stock Mac Mode
+
+Additionally, this layout includes a mouse layer engaged by tapping Fn 3 times,
+holding on the third time. The arrow keys move the mouse, scrolling when shift
+is held (either left or right). Right alt is left click, right meta is right
+click.
+
+# Programming Instructions:
+Enter into programming mode and run the following command.
+```
+$ sudo KEYMAP=dkrieger_hhkb make dfu
+```
+[1]: http://www.elitekeyboards.com/products.php?sub=pfu_keyboards,hhkbpro2&pid=pdkb400b