Time to remove Travis support?

[Ryan Schmidt]

> On Nov 27, 2020, at 10:24, Zero King wrote:
> 
> If we can install .pkgs from the command line and
> skip the initial sync (in the postflight script), we could throw it away
> and just use official pkg installers.

Yes I would like that. I spent some time awhile back rewriting the installer with separate subpkgs so that you could skip some of them, like the one that runs selfupdate, but the work is not finished.