It is not even the end of the month and the outages are increasing every month and it is now chronically unreliable. Seriously, we have given GitHub more than 3 years to improve and it clearly isn't working. That is plenty of time.
At this point, you might as well self-host like the rest of the open source projects out there, since GitHub is falling apart every week and it seems to be more reliable to self-host than to sit on GitHub, go all in and tolerate these outages every calendar month.