Release v0.9.1-RC.1

What's Changed

• Change deploy / publish instruction to not need a separate branch. by @Potherca in #162
• Change project README file by @Potherca in #161
• Prep release 0.9.1 by @ylebre in #167
• Feature/client registrations panel by @ylebre in #163
• return client_secret in the registration by @ylebre in #165
• update test suite version by @ylebre in #168
• Feature: allow blocking clients from the admin panel by @ylebre in #169
• update poddit url to one that is working by @ylebre in #170
• allow approval to return to a custom url schema by @ylebre in #172

Full Changelog: v0.9.0...v0.9.1-RC.1