- Fix: Recurring tax recorded on renewal payments was incorrectly calculated.
- Fix: Tax on renewal payments after an upgrade was not properly calculated.
- Fix: Stripe failed upgrade attempts were causing duplicate subscriptions.
- Fix: Warning due to checking for trials on checkout.
- Fix: Prevent errors happening upon renewal emails in edge-case situations where no product is attached to a subscription.
- Fix: Added defensive checking for errors in the response from PayPal Express.