Initial release -- breaking changes may occur
New features:
Uses asyncio internally - may also be used in user code.
Requires asyncio and adafruit_ticks

Radiohead Header may be disabled for compatibility with other libraries.
FSK/OOK support added to RFM9x
RFM9X can communicate with RFM69 in FSK/OOK (without encryption)
Addressing may be enabled for FSK/OOK on RFM69/RFM9x

There are several examples provided -- more to come.

Note: this cannot not be used on the Feather M0 RFM69/9X boards
requires RP2040 or RFM featherwing/breakout on a MCU with more resources than an M0

It does work on a Raspberry Pi with the RFM bonnet --
most of the testing has been on an RPi with a RFM bonnet (RFM95 and RFM69)
and on a feather esp32s2 with an RFM95 Featherwing

In the examples, you can uncomment 2 lines to select RFM69, RFM9x or RFM9XFSK operation