* [421](https://github.com/stripe/stripe-python/pull/421) Add support for flexible billing and usage records
1.79.1
* [401](https://github.com/stripe/stripe-python/pull/401) Drop conditional dependencies that incorrectly led to an added `simplejson` dependency in Python 3+ after switching to universal wheel
1.79.0
* [397](https://github.com/stripe/stripe-python/pull/397) Build universal wheels by default * [398](https://github.com/stripe/stripe-python/pull/398) Add support for `code` attribute on all Stripe exceptions
1.78.0
* [396](https://github.com/stripe/stripe-python/pull/396) Add support for topups
1.77.2
* [394](https://github.com/stripe/stripe-python/pull/394) Make `last_response` available after calling `save()`
1.77.1
* [389](https://github.com/stripe/stripe-python/pull/389) Register unsaved attributes on assignment regardless of new value