Let's Control It

Does mega-20190925 contain ADC and WiFi improvements released in mega-20190925 (without binaries) ?

See: https://github.com/letscontrolit/ESPEas ... #L195-L207

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TL;DR
Yes

So as I understand, ADC and WiFi improvements are included in 20190925 release.

Yep.
But Clumsy-Stephan already found an issue with it when running deep sleep.
Currently the reading of the ADC is just echo'ing the last reading when the WiFi is trying to connect.
When you use deep sleep, you may need to wait a bit more to get a proper reading before going to sleep again.
So this fix may need some tweaking here to only stop reading ADC values during RF calibration.
Problem is, there is no event indicating when that's taking place.

This is not a problem for me. I don't use deep sleep. More importantly, there is a chance that nodeMCU will not be reboot on such an occasion. We will observe and see ...