MMSegmentation v0.21.1 Release

Bug Fixes

• Fix repeating log by setup_multi_processes. (#1267)
• Fix typos in docs. (#1263)
• Upgrade isort in pre-commit hook. (#1270)

Improvements

• Use MMCV load_state_dict function in ViT/Swin. (#1272)
• Add exception for PointRend for support CPU-only. (#1271)

New Contributors

• @RangeKing made their first contribution in #1263