Be a little bit more patient, PR should go soon now as you can see from the current status
It's great to see work being put into the RFM69 driver. I have tried to install your code and updated my gateway and a sensor node
On the sensor node I added
and in the debug window I see
Message type 30 always fails (st=NACK) - is this expected?
Gateway is ESP8266 and node is Anarduino (328p+RFM69CW)