avoid compile warnings due to deprecated code in junit
Merge branch 'travis' into junitwarnings
upgrade maven compiler plugin
maven best practice: define minimum required maven version
Merge branch 'travis' into pluginupgrades
Merge pull request #28 from davidkarlsen/depupgrades

Dependency upgrades
Merge pull request #29 from davidkarlsen/junitwarnings

avoid compile warnings due to deprecated code in junit
Merge pull request #30 from davidkarlsen/pluginupgrades

Pluginupgrades