A new version of the Shizuku firmware has just released (v1.00.62), which appears to have added support for PD3.1 EPR/AVS. I have not yet tested this functionality, but have noticed some potential problems while testing DingoCharge on the new firmware.
One issue I've found is that the elapsed time (and therefore, the speed in which the bottom statusbar rotates through its different reports) is advancing about 10 times as fast as it's supposed to, which also means that the Time Limit safety feature also expires 10 times as fast (default becomes 2.4 hours rather than 24 hours). Accumulated charge/energy measurements seem to be unaffected.
Further testing will need to be done to see what/if any bugfixes/workarounds are available.
I sometimes have NiMH battery packs. Actually 3x 1,2 V = 3,6V/2700mAh from a Toniebox which i want to test/charge with logging function. Would be usefull if you can add support for NiMH batteries/packs.