rip out pause code from viki as it is now in panel
add button_pause to button mask
Merge pull request #200 from wolfmanjm/upstreamedge

Upstreamedge
Merge remote-tracking branch 'upstream/edge' into edge
Fix potential race condition in panel startup
add Panelolu2 (which is virtually identical to viki)
Merge pull request #201 from wolfmanjm/upstreamedge

add Panelolu2 (which is virtually identical to viki)
Add new panel examples
moving StepperMotor.h to actuators/
Stepticker now inherits Actuator
forgot Actuator.h
moving all modules to use Actuator instead of StepperMotor ( but still instantiate StepperMotor )
adding virtuals to Actuator
Add hack to detect i2c timeout, and reset Viki LCD when detected
revert to pre-actuator state
Merge remote-tracking branch 'upstream/stable-edge' into edge
Merge remote-tracking branch 'upstream/edge' into edge