Version 3.5.0 on NPM doesn't correspond to a tag or a commit on the master branch

Recently version 3.5.0 of this packaged appeared on NPM, but the version field in the package.json file still says 3.4.4. There is also no tag or release corresponding to version 3.5.0 on GitHub. Was 3.5.0 a legitimate version? If so, would you please bring the git repo up to date with it?