Merge pull request #5 from dieterdemeyer/master

Modified dependencies to be more specific
Merge pull request #6 from dieterdemeyer/master

Fix for getting upstream artifacts
Merge pull request #7 from dieterdemeyer/master

Another fix
Merge pull request #8 from dieterdemeyer/master

Ultimate fix
Fix for error fetching artifacts.
Merge pull request #9 from willaerk/master

Fix for error fetching artifacts.