Change trunk branch to "main"

[guygrigsby]

I propose that we switch to "main". I realize this would likely break most/all automated deployments that runs from this repo. I don't imaging deployment branch changes will be a large change, but I can't be sure so I wanted to run it by the community. I would be happy to make the change to the repo.

Are folks willing to make the changes to deployments?

In what timeframe could they be reasonably be made?