GitLab

* remove registry.py in datasets/

* remove registry.py in ops/pointnet_modules/

* remove registry.py in models/

* refactor builder using mmcv.MODELS registry

* update mmcv min version requirement

* change min mmcv version requirement in mmdet3d/__init__.py

* min mmcv version to 1.3.2

* Update README.md

* Update version.py

* Update getting_started.md

* Update __init__.py

* Update changelog.md

* Update README.md

* Update news for nuScenes detection challenge

* Update README to be compatible with refactored doc

* Update an installation subtitle

* rephrase
Co-authored-by: ZwwWayne <wayne.zw@outlook.com>

* Update mmdet maximum version

* Update install.md

* Update README.md

* Update __init__.py

* Update changelog.md

* Update changelog.md

* Fix a minor typo

* Fix minor typos

* Update changelog.md

* Update v0.6.1 change log

* Update version.py

* Update init file to be compatible with mmdet

* Changelog refinement

* Sync modification in New Features

* Sync modification in Highlights

* Changelog refinement

* Update README.md for v0.6.1

* Update a newest [fix] PR

* Add version assert in init file.

* update mmcv requirement
Co-authored-by: zhangwenwei <wayne.zw@outlook.com>