Cut new release for Stripe Checkout functionality

[stephendolan]

I'm happy to help with the Changelog if necessary, but basically it's just getting this PR into an official release:
#7

I didn't want to use master for my production app, so I'm currently installing a specific commit of this library. It'd be great to move to a more standard version bump :)

[stephendolan]

Hey, @confact!

Hope you had a lovely time over the holidays, and that KindMetrics is going well. I wanted to bump you on this one since I'd very much like to do a LuckyCast on setting up Stripe with Lucky, but will need a stable release with the functionality to be available before I can publish.

By the way, if there's anything I can do to help with maintaining this Shard as a member of the repository, I'm happy to be involved! I'm using it in production on https://luckycasts.com, so I definitely have a vested interest in keeping it alive and healthy :)

[confact]

@stephendolan Hi!

Been busy and not being able to give this repo the love it deserves. I added you as a collab to this repo, as I would love to get help!

Feel free to push the new version out, or I will try to get a new version out later today.

[stephendolan]

Awesome, thanks @confact! I just pushed and release v1.1.0. Just ping me if there's anything you see me doing that you'd like done differently!