Do phase 3 of proposal 289
In prop#289 we included a deployment timeline. Currently we are at Phase 2 and Phase 3 contains the following:
This phase will effectively exit() all tor not supporting
"FlowCtrl=1". The earliest date we can do that is when all versions
not supporting v1 are EOL.
According to our release schedule[4], this can happen when our latest
LTS (0.3.5) goes EOL that is on Feb 1st, 2022.
We are past Feb 1st, 2022 and 0.3.5.x is gone for good for a while. Let's get to Phase 3 for the next major release at least then.