Renaming doc to references to avoid confusing with documentation.
Fixed formating and file type.
Fixed file format and renamed CosaTimeout to CosaBlinkInterrupt.
Fixed README follow renaming.
Avoid allocating event queue with malloc.
Moving analog pin set vector into program memory.
Adding analog pin set example.
Opps.
Cleanup.
Added brief description of class hierarchy and overview.
Refactoring SPI.h. Moved commands to ADXL.h.
Adding two wire master device class, TWI.
Replacing event type enum with int to allow application extension.
Using bool instead of uint8_t.
Adding TWI to CLASS description.
Adding support for TWI slave mode. Improving bus event state machine.
Adding IOPin class for pins that may change mode and support for pulse wait.

1. IOPin class to handle pins that may change mode (input/output).
2. New function, PIN::await_change(), to measure expected pulses.
Mapping TWI status to allow improved compiler optimization of switch statement.
Replacing Arduino Serial with a new Trace class.
Ripple effect of Arduino Serial replacement with new Trace class.