Some quick notes

1. I created a "fork" repository of the Gitlab ns-3 development repository at [https://github.com/cdgreenidge/ns-3-cos561]. It's not a Github-style fork since the original is on Gitlab, basically the upstream remote points to the Gitlab repo and the origin remote (when you clone it) should point to cdgreenidge/ns-3-cos561. I made a dev branch off of tag ns-3.32, which is the latest release as of 2020-10-19. I think we can do our TCP congestion control development on this branch.
2. This repository includes cdgreenidge/ns-3-cos561 as a submodule. Our sim scripts and data analysis/plotting code/latex can go in other directories. Make sure to run git submodule update --init --recursive after cloning to grab the ns-3 code.