Bug: usernames should always remain in the same order to avoid unnecessary changes

[nickytonline]

In #208, there are several changes where the order of the GitHub users changes and that's all.

It would be nice to keep the order the same (alphabetical most likely) so that only actual owner changes are applied.

[jpmcb]

The idea behind the original implementation is that the order matters: the people with the most changes show up first. This was more or less the easiest solution since we sort the contributors in each file based on their changes and then add the first 3 (where the first person has the most contributions).

[nickytonline]

Cool cool. Thanks for the context @jpmcb!