I have been unable to add this extension to Packagist due to its use of the "mediawiki" vendor. If it were in Packagist, users would not need to be instructed to add the extension's GitHub repository to their composer.local.json. Can anybody help me to achieve this? The error message I get when trying to submit the package to Packagist is:
The vendor is already taken by someone else. You may ask them to add your package and give you maintainership access. If they add you as a maintainer on any package in that vendor namespace, you will then be able to add new packages in that namespace.