GitHub is of course not intended for anything like this, but here's an example on how to use the source code repository for campaign management:
https://github.com/phd20/prime/blob/master/Atlas/Kandalur/Kingdoms/RisingLands/Settlements/NewHaven.md
GitHub lacks most of the key features for this...
In the best Halloween tradition (as in breaking out in a cold sweat) I just merged my recent generator updates into the developer and master branches of the GitHub generator repository:
https://github.com/open-campaign-logger/generator-library/commits/master
This has no direct practical effect...