Are Grails 3.x plugin names supposed to be org.grails.plugins:$project.name or just $project.name?
The default from https://raw.githubusercontent.com/grails/grails-profile-repository/master/profiles/plugin/templates/bintrayPublishing.gradle is org.grails.plugins:$project.name, but at https://bintray.com/grails/plugins/ some plugins include org.grails.plugins: and some do not.
As far as I can see there is no clear pattern that "official" plugins include org.grails.plugins: and third party plugins don't.
Update: bintrayPublishing.gradle referenced above has now changed the default name to $project.group:$project.name. The name is just a name, it is not used for dependency resolution in any way. But with the latest changes it is easier to see what the maven groupId and artifactId is.
Update 2: bintrayPublishing.gradle has changed the default again, now it's just $project.name. Starting from Grails 3.1 bintrayPublishing.gradle has been replaced by a plugin. See also question 2 in this blog post