* [534](https://github.com/stripe/stripe-python/pull/534) Fix session initialization for multi-threaded environments
2.20.1
* [531](https://github.com/stripe/stripe-python/pull/531) Make `RequestsClient` thread-safe
2.20.0
* [526](https://github.com/stripe/stripe-python/pull/526) Reuse the default HTTP client by default
2.19.0
* [524](https://github.com/stripe/stripe-python/pull/524) Rename `CheckoutSession` to `Session` and move it under the `checkout` namespace. This is a breaking change, but we've reached out to affected merchants and all new merchants would use the new approach.
2.18.1
* [525](https://github.com/stripe/stripe-python/pull/525) Properly serialize `individual` on `Account` objects
2.18.0
* [518](https://github.com/stripe/stripe-python/pull/518) Add configurable telemetry to gather information on client-side request latency