Feature

• Feature: collection sharing by map or token incl. management API and WebUI extension (#1978)
  • see for more: (https://github.com/Kozea/Radicale/blob/master/SHARING.md)
  • major credits to @maxberger for WebUI extension/rework/cleanup
• Feature: share address book collection as birthday calendar (#1463)
  • KNOWN ISSUE: not working on non-debug level: #2071

Extension

• Add: [server] delay_on_error option
• Add: [auth] oauth2: allow custom client_id and client_secret (optional)
• Add: [logging] limit_content option
• Add: [headers] Content-Security-Policy is now set to be strict on new configs

Improvement

• Performance: improve path_to_filesystem()
• Performance: preload access rights from file
• Improve: [server] max_resource_size is now also checked on storage discover+get to avoid issues with items stored outside using PUT
• Cleanup: WebUI is now split into smaller javascript files
• Cleanup: WebUI is now fit for strict content security policy
• Cleanup: WebUI: Simplfied Caching and Navigation internally
• Cleanup: WebUI: Unified error handling
• Cleanup: Added integration test for verification of end-to-end behavior of WebUI

Cleanup

• Cleanup: deprecate config option 'ldap_use_ssl' for good