[WIP] Pull in changes from downstream fork

[mburns]

Props to @rebeccahughes for this work:

• support for Google Auth
• more better Theme
• miscellaneous package maintenance

@creationix @kaustavha - feedback/review would be appreciated, as always. :smile:

[mburns]

This PR is probably best as a point of reference. The features should be cherry-picked and landed separately.

[mburns]

I've broken this out into separate PRs. #115 #114 #113