[Erez & Jack] Documents tri-layer and keymap-specific makefile options

[Erez & Jack] Makes tri-layer available across Quantum

audio note length fixes

the spacessss

bootmagic somehow not getting enabled, so adding eeconfig to backlight src include cond

might have broken something

changing up the makefile a bit

new defaults

Merge pull request #254 from IBNobody/master

Atomic TLC / Compiler Warning Fixes

Merge pull request #1 from IBNobody/pc_planck

Corrected minor spacing issues

Added parenthesis to midi macro.

Disabled print.

Corrected spacing.

Corrected spacing.

Merge remote-tracking branch 'refs/remotes/origin/master' into pc_planck

Merge remote-tracking branch 'refs/remotes/jackhumbert/master'

Merge https://github.com/IBNobody/qmk_firmware into pc_planck

Merge remote-tracking branch 'refs/remotes/origin/pc_planck'

Merge remote-tracking branch 'refs/remotes/origin/master' into pc_planck

Compiler Warnings / Atomic TLC

Corrected compiler warnings for a number of issues.  Gave Atomic some
TLC.