Promise support

[zeke]

Hello @thisandagain! Long time no see. 👋

This module is handy, but it would be more ergonomic in our new async/await world if it supported Promises. I'd be happy to open a PR for this but want to see first if this module is maintained, and if such a change would be welcomed.

[thisandagain]

Hey @zeke! 👋

This module is still used in production by our team, but I haven't had much reason to make changes. Happy to accept a PR adding support for promises.

[zeke]

Nice! Question: Would you be open to a new major version (breaking change) that only supports Promises? Or is it important to continue supporting both?

[thisandagain]

It would be ideal to support both, but I'm certainly open to a major version bump that only supports promises.