Keycloak CAS Protocol 21.1.0

What's Changed

• Redirect user for logout if no active session by @ValentinLorand in #77
• Update to Keycloak 21.1.0 by @jacekkow-bot in #79

New Contributors

• @ValentinLorand made their first contribution in #77

Full Changelog: 21.0.2...21.1.0