Changed value of BATTERY_STRING
Added matTime

Added matTime to readRaw
Added UTC offset script

Script that returns local offset in either seconds, minutes, hours, or
days.
Makes CDFs

Added script to make CDF files, calls readraw. Updated constants.
Updated for new header

Header now includes device model.
Updated for new returns

Changed readraw return values, updated makecdf to match new returns.
Updated returns, added header conversion

Updated return values. Added dialog box to ask user if they want to
update out of date hears (when applicable)