Improves the subscription flow for anonymous users by making the routes available, and showing a login button. Clicking login from this page will save a `destination_url` cookie so that when logging in they're redirected back to the subscription page they were at.
- Replace deprecated methods on client
- Fix broken dropdowns due to select kit 2 upgrade
- Graceful error handling when Stripe keys are not configured but plugin enabled
Justin DiRose
Rimian Perkins