adds voice iteration to planck default

Fix typo (#276)

adds more voice harmonics

Merge remote-tracking branch 'origin/master'

# Conflicts:
#	quantum/audio/voices.c

adds fifth and fourth down voices

fixed compiler warnings (#273)

adds more voices, fixes macro redefines

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

adds multiple voices and the ability to iterate/deiterate between them

Merge pull request #265 from sboesebeck/master

ErgodoxLayoutGenerator used

converts tabs to spaces

restructures audio, begins voicing

fade envelope

start of envelope function

sounds for plover layout

start-up sound working, removes tick with some devices

there is no on

delay isn't the problem here

makes the plover keymap correct