Depending on Common Test Runner API makes installation brittle

[drrb]

The plugin currently has an implementation dependency (or "friend" dependency) on the Common Test Runner API. This means that it needs to be installed with a specific version of that plugin. This makes it much more likely for users to have NetBeans installations that don't work with the plugin. We should look into making this a looser dependency, or vendoring the module.

[drrb]

Will look into this as part of porting to NetBeans 8.2 (#19).

[timboudreau]

FYI, yesterday I submitted a pull request that will address this issue.