* Add markdown lint in pre-commit hook

* add markdown lint

* fixed typos

* replace url with download

* update to http

* clean op

* clean

* update build.yml

* fix setup

* change ci mmcv version

* change ci mmcv version

* add install pre-build mmcv instructions

* update mmcv url, move some unnit tests to mmcv

* update ci mmcv

* test

* test

* test

* fix unit test

* fix unit test

* fix onnx script

* update mmcv url

* fix typo

* fix some doc

* Bump version

* resolve comments

* Fix version bug

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

* Add PointRend

* remove PointExtractor

* add 1x 3x mstrain

* fixed test

* fixed test bug

* add README.md

* fixed doc string

* update doc

* update doc

* update comments

* fixed docs

* update docs

* change roi extractor

* update docstring

* minior update

* update docstring

* rename to mask point head

* simplify super

* move point head

* rename