Moved intake power setting to execute() to allow continuous update
Implemented sticky mode for appendage control commands
Added grabber and intake override controls, mostly for testing. Added power scaling
Added two-arg version of window() function
implemented preferences storage of parameters, added mapping from sensor volts to degrees
Merge branch 'octocanum' of https://github.com/Iobotics/FRC-2014-AerialAssist into octocanum