* Upgrade wagon-ssh to 3.2.0
* Upgrade maven-jxr-plugin to 3.0.0
* Upgrade maven-shade-plugin to 3.2.0
* Upgrade jacoco-maven-plugin to 0.8.2
* Upgrade maven-project-info-reports-plugin to 3.0.0
* Upgrade maven-enforcer-plugin to 3.0.0-M2
* Upgrade maven surefire plugins to 2.22.0
* Ensure same version of maven-surefire-plugin and maven-surefire-report-plugin
* DiffCommandTest: Don't call toString on String instances
* FileNameMatcherTest: Use Character.valueOf rather than new Character
* ArchiveTest: Don't use string concatenation in loop
* CLIRepositoryTestCase: Remove unused 'trash' member
* Merge branch 'stable-4.5'