to be super candid, this isn’t open source because i don’t have the bandwidth to maintain/support another open source project. that may change as time goes on, though.
i get it’s a trade off, though, and i respect anyone not wanting to use it because of that.
Your pitch for storing "API keys, tokens, and credentials" puts you personally in a rather liable position if someone uses this exactly as described, and you've made a mistake in code no one else has seen that either gives YOU those credentials, or leaks them somewhere another party can see them. (Analytics, logs)
For yourself, this is kick-ass and solves a real problem. But I might refrain from pitching it for use by others because there's basically only downside for you in that.
that said, i thought more on it last night, and i’ve decided to open source it. just going to be explicit in the README that i wont be offering support for anyone wanting to self host atm, just wasn’t built to be easy to self-host (external service dependencies and etc).