This is a security-focused release with fixes for [CVE-2020-15234](https://github.com/ory/fosite/security/advisories/GHSA-grfp-q2mm-hfp6), [CVE-2020-15223](https://github.com/ory/fosite/security/advisories/GHSA-7mqr-2v3q-v2wm), [CVE-2020-15233](https://github.com/ory/fosite/security/advisories/GHSA-rfq3-w54c-f9q5). Upgrading is strongly advised! A few things have changed as part of these patches: - OAuth2 Redirection URL error parameters `error_hint`, `error_debug` have been deprecated and are now part of `error_description`. The parameters are still included for compatibility reasons but will be removed in a future release. - OAuth2 Error `revocation_client_mismatch` was not standardized and has been removed. Instead, you will now receive `unauthorized_client` with a description explaning why the flow failed. Additionally, the TypeScript SDK generator has changed from OpenAPI's `typescript-node` to `typescript-axios` making the SDK compatible with both browser as well as node environments, which was not the case previously. Please be aware that some of the SDK's API signatures - especially responses - have changed and check your TypeScript output for instructions on upgrading. You may still use an older version of the SDK as none of ORY Hydra's HTTP APIs have changed. New features have been added and bugs have been closed. No migrations are required when applying this release. Please check the list below for an in-depth overview.