Converted audio play functions to *_user (#349)

* Updated personal layouts

* tweaked personal

* Nightly - Audio Cleanup

Refactored the LUTs. Abstracted some of the registers out of audio to
use more functional names. Split audio into audio and audio_pwm. WIP

* nightly - collapsed code

* Added check for note playing to LEDs

* Usability tweaks

* TWEAE

* nightly

added extra kcs to keymap common

* turned on Plank audio

* Added backlight breathing to atomic

* reverted accidental merge

* Added music and audio toggles to Quantum.c

* Redid the audio callbacks

* Adjusted default planck layout to use the user tone naming

* tabs to spaces

* Rewrote the ALL recipe to allow for faster parallel make

* tabs to spaces

* Renamed custom event functions to be 'startup_user' and 'shutdown_user'. Also moved the prototypes around.

* Tweaked pvc atomic layout to work with the pvc planck.

* updates midi scale calling

adds KC_NUBS, KC_NUHS and shifted versions to default keymaps

fixes default planck keymap

cleans up default keymaps (olkb)

Merge remote-tracking branch 'upstream/master'

[planck] adds button for toggling output in plover app (#323)

* [planck] toggle plover output in app when toggling plover layer on keyboard

* [planck] moved plover toggle to separate key

* [planck] renamed toggle button

Merge branch 'master' of https://github.com/jackhumbert/qmk_firmware

fixes plover start sound

removes extra voices, updates .hex files

adds condition to one last audio ref in planck default

Merge branch 'master' of https://github.com/jackhumbert/qmk_firmware

updates planck default keymap

adds voice iteration to planck default

Merge pull request #271 from eltang/qmk_firmware/eeprom_wear_fix

Update functions used to write to EEPROM

Update functions used to write to EEPROM

sounds for plover layout

makes the plover keymap correct

Merge branch 'master' of https://github.com/jackhumbert/qmk_firmware

fixed startup audio with a 500ms delay

breaking changes - restructuring audio.c a little