GitLab

* Add file client to image io

* Fix petrel_client imwrite error

* Add examples to the docstring and delete the file check of imread

* modify docstring v1.3.19->v1.4.1

* Deprecate auto_mkdir parameter and complete test_io.py

* Fix error caused by deleting the mock package in test_io.py

* Add annotation to imencode

* modify imread input assert and delete the judgement of file client 'put' method

* Delete try except in imwrite.

* Add a error file extension unit test.