Merge pull request #1 from foxiepaws/master

Style fixes and stuff
Configured DCO for 15.25MHz operation.
Fixed makefile to not eat up all the source files while cleaning
More cleanup fixes
Added heartbeat LED control state machine to ISR
Moved from watchdog based interrupts to TimerA0 running at 1mS
code cleanup
Fixed the tap tempo system
Added program pattern state machine and a small test program
Added schematic for reference
Fixed bug where heartbeat led and pattern progression are not in sync after pausing
Put the bump switches back into the system
Added hooks for programming mode
Implemented programming mode
Cleaned up some compiler warnings
changelog update
Create README.md