Feature

• merge_request_approvals: Add support for deleting MR approval rules (85a734f)
• artifacts: Add support for project artifacts delete API (c01c034)
• mixins: Allow deleting resources without IDs (0717517)
• objects: Add a complete artifacts manager (c8c2fa7)

Fix

• services: Use slug for id_attr instead of custom methods (e30f39d)
• Remove custom delete method for labels (0841a2a)

Documentation

• Enable gitter chat directly in docs (bd1ecdd)
• Add delete methods for runners and project artifacts (5e711fd)
• Add retry_transient infos (bb1f054)
• Add transient errors retry info (b7a1266)
• artifacts: Deprecate artifacts() and artifact() methods (64d01ef)
• Revert "chore: add temporary banner for v3" (#1864) (7a13b9b)