verified capability to communicate with an Arduino via the nRF24L01
changed CE pin to use board.D4 in the examples as this pin is available on most CircuitPython MCUs and the Raspberry Pi doesn't use it for any special functionality
this also reverts back to a proper Python package structure for future development of additional modules. Note the code in __init__.py as it preserves backward compatibility with the old import statements (using a single module python library)
Split the API reference page into "Basic" and "Advanced" for millennials lacking a 10-minute YouTube video on how to use the library
board.D4in the examples as this pin is available on most CircuitPython MCUs and the Raspberry Pi doesn't use it for any special functionality__init__.pyas it preserves backward compatibility with the old import statements (using a single module python library)