updates ez's matrix to spec

Backlight abstraction and other changes (#439)

* redoes matrix pins, abstracts backlight code for B5,6,7

* slimming down keyboard stuff, backlight breathing implemented

* don't call backlight init when no pin

* cleans up user/kb/quantum calls, keyboard files

* fix pvc atomic

* replaces CHANNEL with correct var in breathing

* removes .hexs, updates readmes, updates template

* cleans-up clueboards, readmes to lowercase

* updates readme

Add OS specific layers that can be switched with macros (#436)

AB's practical planck keymap (#435)

Updates overall readme

Adds a Readme for the keyboards subdirectory

well that didn't work

adds author block to readme

Merge pull request #433 from algernon/ergodox-ez/algernon

ergodox_ez: Update the algernon keymap to v1.2

ergodox_ez: Update the algernon keymap to v1.2

Noticeable changes since the last pull request:

* The forced NKRO mode can be easily toggled off at compile-time, to
  make the firmware compatible with certain operating systems.
* The `:;` key has changed behaviour: to access the `;` symbol, the key
  needs to be double-tapped, instead of shifted.
* The `=` and `\` keys were swapped, `=` moved to the home row, on both
  the **base** and the **experimental** layers.
* The arrow and navigation keys were redone, they are now more
  accessible, but the navigation keys require an extra tap to access.
* The **Emacs** layer is gone, replaced by a simplified
  **navigation and media** layer.
* `LEAD v` types the firmware version, and the keymap version.
* On the **experimental** layer, the `L` and `Q`, and the `K` and `G`
  keys were swapped.
* The **Steno** layer gained a few more `#` and `*` keys, to make it
  easier on my fingers.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

increase leader seq size to 5

Renames keyboard folder to keyboards, adds couple of tmk's fixes (#432)

* fixes from tmk's repo

* rename keyboard to keyboards

adds backlight levels to the satan keyboard (#431)

* enable 4 levels

* remove breathing stuff

* update channels, comments, hex

adds fuse settings for atmega32u4, fixes keymap_extras includes

Warning reductions (#430)

Warning reductions

Change base box to avoid breakage in Arch box (#429)

I haven't had a chance to update the Arch base box in a while so using the Ubuntu one is far more likely to succeed for a new user (I did test that box recently as I traded my ErgoDox EZ to a friend and needed to reprogram it for him).

Fix the make all-keyboards command (#422)

Unfortunately the supported targets, like "quick", "all", "clean",
and so on has to be repeated two extra times, but this is the best
I can do with my makefile skills.

reduces rgblight warnings, integrates completely (#428)

updates all config.h and Makefiles to correct references, text

Added stanleylai's personal keymap (#420)

* Added WS2812 support for KC60

* Reorganized WS2812 support into its own keymap

* Fixed relative link in README

* Moved WS2812 mention in README to the bottom

* Fixed titling in WS2812 README

* Reverted KC60 Makefile and default keymap back

* Moved RGB specific config.h to ws2812 keymap folder

* Added my personal keymap

* Updated compiled hex

* Reverted KC60 files to 3f6fac47 before pull request #419