Bump version to v1.0.0 (open-mmlab#2169) (open-mmlab#2170)

Merge dev-1.x

Bump version v1.0.0rc0 (open-mmlab#1718)

[Fix] Fix pypi depoyment (open-mmlab#1720)

fix deploy

bump version v0.28.1

Bump version 0.28.0 (open-mmlab#1468)

* update changelog

* update readme

Bump version v0.27.0 (open-mmlab#1414)

* update README and changelog

Bump version v0.26.0 (open-mmlab#1356)

* update version and changelog

* update readme

* fix changlog

* fix changlog

bump version to v0.25.1