Library config in separate header
Move config options from matrixPanel.h to config
Bits that didn't belong in config
DEBUG console - parameter to set speed
TIVA detection macro - make it work if Energia does define TIVA
Move TIVA detection macro to config header
should be in Energia, but until then it is what have to
adjust if new Tiva processors are supported.
Benchmark - time between timer interrupts
Benchmark - OE duty cycle
Benchmark - oe, when timer period set
Make OE off period shorter
(may make it brighter, but should make pulse modulation
effect on brightness more consistent)
timer trackers volatile
remove MAP_ from library calls in ISR - speedup
adjust delay to next refresh because timer set not at
beginning of ISR
Comments - remove some of old debug and bench code
Estimate Timer offset for 1294x