GitLab

* [fix]:fix type hint in file_client and mmcv

* [fix]:fix type hint in tests files

* [fix]:fix type hint in tests files

* [fix]:fix pre-commit.yaml to igore test for mypy

* [fix]:fix pre-commit.yaml to igore test for mypy

* [fix]:fix precommit.yml

* [fix]:fix precommit.yml

* Update __init__.py

delete unused type-ignore comment

* first commit

* Add copyright pre-commit-hook

* Upgrade the version of isort

* sort the order of importing modules

* [Fix] fix some warnings in unittest

* [Impl] standardize some warnings

* [Fix] fix warning type in test_deprecation

* [Fix] fix warning type

* [Fix] continue fixing

* [Fix] fix some details

* [Fix] fix docstring

* [Fix] del useless statement

* [Fix] keep compatibility for torch < 1.5.0

* [Fix] Fix torch.load error

* [Fix] Fix torch.load error

* rename _save to _save_ckpt

* add load_url to handle imcompatibility of PyTorch versions

* add unittest for load_url

* fix typo

* print a friendly information when error occurred