Prepare 0.10.0. (coil-kt#366)

* 0.10.0 release notes. First pass.

* Update notes.

* Update changelog.

* Update changelog.

* Update changelog.

* Update changelog.

* Update readme.

* Update readme.

* Revert change.

* Update readme.

* Update CHANGELOG.md

* Update version.

Prepare 0.9.5.

Prepare 0.9.4.

Prepare 0.9.3.

Prepare 0.9.2.

Prepare 0.9.1.

Prepare 0.9.0.

Amend release notes.

Fix changelog parsing for MkDocs.

Prepare 0.6.1.