added debouncing to the button library, at a cost of -1 bytes of ram
hexbright: cause shutdown when usb is unplugged because low battery is erroniously detected in this case
cleanup of various files relating to the charge_state code rework
Merge branch 'master' of https://github.com/dhiltonp/hexbright
up_n_down: up the sensitivity of nightlight mode
added a temporary fix for low-voltage detection on unplugging the usb
improved the delay in read_adc.  This gives more headroom for inconsistency between devices
Merge branch 'whb'
standardized sections, spacing.  prep for changes to low_voltage
Updated readme with a note on low battery delay
Merge branch 'master' of git://github.com/dhiltonp/hexbright into dev_branch