bhargavchippa also contributed to this repo, so this doesn't seem like one of those random "fork and lie" sort of thing. Without the necessary context, we can't assume much. It could well be that mwshinn was in the wrong or there was an "okay" from mwshinn for bhargavchippa to make those changes.
https://github.com/mwshinn/forceatlas2-python
bhargavchippa also contributed to this repo, so this doesn't seem like one of those random "fork and lie" sort of thing. Without the necessary context, we can't assume much. It could well be that mwshinn was in the wrong or there was an "okay" from mwshinn for bhargavchippa to make those changes.