cbbrowne custom keyboard

Due to cbbrowne@acm.org Christopher Browne

This was originally based on the default keyboard map, but I have been doing sundry experimentation:

To figure things out about the toolset
I'm an Emacs guy, so will be needing a fair bit of tuning
It made sense to mess around some with keyboard maps.
- I tried added Workman alongside Dvorak and Colemak
  - Boy, oh boy, these don't help!!!
  - I have done 30 years of learning of Emacs key mappings, and these alternative keyboards massively mess me up
- I added a keypad, originally based on keymaps/numpad.c, but mighty substantially revised, as that one seems to be rotated 90 degrees from usual conventions for number pads
The keypad layer also includes some sample "hacks" of cool things, all using actions attached in using the function action_get_macro()
- Key [1][2] aka "q" types out my name, cbbrowne, as a fun example of a key generating a bunch of keystrokes. The keystroke is sufficiently inconvenient that it isn't terribly practical for me to use it, but hey, it shows how others might use this facility in a more useful context.
- Key [2][2] aka "a" uses a random number generator to select a digit 0-9 at random
- Key [3][2] aka "z" uses a random number generator to select a letter a-z at random