Swap repo default branch to main #76
Description
@alienbrett can we swap the default branch from master to main as is the new industry standard.
This is under https://github.com/alienbrett/PyAlly/settings > General > Default branch.
If you want to upgrade my role, I can help maintain some of these types of settings as well over time. (I also plan to make some more PRs/settings changes with regards to dependabot and community management.)