* Set "openapi-generator-maven-plugin" version to 3.0.0
* Disable maven-install-plugin in "openapi-generator-gradle-plugin"
* Changes to the maven wrapper for openapi-generator-gradle-plugin
* Remove deploy-file that does not work
* update release version to 3.0.0
* comment out ensure-up-to-date during the release
* add release note
* clean up
* clean up links
* add release note for 3.0.0
* update release note
* update release note
* update version for gradle plugin before release