Reverting to SPI/TWI without semaphore. Rethinking design.
Reduce code; use SPI iovec write member function.
Cleanup; remove duplicate attributes.
Add support for Arduino 1.0.6 tooling.
Update for Arduino 1.0.6 toolchain; does not support C++11 for-loop.
Cleanup formatting.
Running Wireless example sketch with NRF24L01P device driver; verifying change.