Moved Utils.round() to Math. Added Math.pow() implementations and Math.ln()
Fix SquareRootedJoystickMode for negatives... d'oh
Fix cubed and squared joystick modes for negative inputs... d'oh
Added initial logging utils
Cleaned up LogWriters and implemented FileLogger
add flush
Merge branch 'logging' of https://github.com/FRC3161/Iapetus2014 into logging