Bump version to v2.14.0 (open-mmlab#5466)

* Bump version to v2.14.0

* update

* update

* update

* update version

Bump version to v2.13.0 (open-mmlab#5262)

* update changelog

* update changelog

* Improvements

* Improvements

* update for v2.13.0

Co-authored-by: hhaAndroid <1286304229@qq.com>

Fix typos (open-mmlab#5102)

* add change log

* update version number

* update compatibility doc

* reformat

* fix typos

Bump version to v2.11.0 (open-mmlab#4870)

* add change log for v2.11.0

* fix typo

* version 2.11.0

* fix typo

* to meet the specification of change log

* Update changelog.md

Co-authored-by: Wenwei Zhang <40779233+ZwwWayne@users.noreply.github.com>

Bump to v2.10.0 (open-mmlab#4692)

* bump to v2.10.0

* update other docs

* resolve comments

* resolve comments

Bump to v2.9.0 (open-mmlab#4557)

* bump to v2.9.0

* update

bump to v2.8.0 (open-mmlab#4387)

bump to v2.7.0 (open-mmlab#4205)

* bump to v2.7.0

* update dates

* update version requirements

* rephrase

* resolve comments

Bump to v2.6.0 (open-mmlab#4038)

* bump to v2.6.0

* update version requirements

* Add README.md reference

* Fix README.md

Bump to v2.5.0 (open-mmlab#3879)

* bump to v2.5.0

* update PR

* resolve comments

* clean unnecessary modification

* update bc breaking

* rephrase bc-breaking

* rephrase