Release 9.2.0

What's Changed

Changes

• feat: harden the install callback (full redirect_uri, no exchange without a code, optional state check) by @johnkors in #56

Full Changelog: 9.1.1...9.2.0

11f5adb Merge pull request #56 from dotnetbots/jk/oauth-callback-hardening
4a51aac feat: the cancelled page also gets Slack's error, so it can tell a cancel from a failure
a34c28f fix: await the failed callback's response body
31934e8 feat: harden the install callback: full redirect_uri, no exchange without a code, an optional state check