New Features

Support for slae.sh's CC2562R USB coordinator (@MarhyCZ)
🎉 Z-Stack Home 1.2 support 🎉
Preliminary support for permitting joins with Zigbee 3.0 Install Codes via ControllerApplication.permit_with_key.

New Tools

python -m zigpy_znp.tools.network_scan: performs an active network scan on the specified channels and prints out all unique beacons with timestamps.
python -m zigpy_znp.tools.nvram_reset: new -c deletes every known NVRAM item, effectively resetting your hardware to its newly-flashed state.

Fix ControllerApplication.probe() failing when other zigpy radio libraries have previously attempted to communicate with a radio's serial port at the wrong baudrate.
Add support for Mgmt_Lqi_req and Mgmt_Rtg_req ZDO commands, fixing issues with https://github.com/zha-ng/zha-map (@Samantha-uk)
Populate the coordinator's zigpy.device.Device object's node descriptor.
Fix sporadic resource cleanup race condition multiple request/response/callbacks where the first one fails.
ZNP.nvram_read/write/delete will now perform multiple reads and writes with offsets if an item is too long to read or write in one request.

ControllerApplication.form_network() will not store the channel mask in NVRAM if a specific logical channel is provided as well. If no logical channel is provided, the coordinator will perform a scan for existing networks and pick a channel at random from the provided mask.
Minimum zigpy version has been upgraded from 0.23.0 to 0.24.1.