semantic-versioning-plugin-1.6

• The plugin is now based on a BuildStep which allows more control when sequencing builds. The previous implementation did not take into account any pre- / post-processing of the POM that may affect the version.
• Adding copyright to files and correcting mis-spelling
• Adding the ability to choose what is displayed in the Semantic Version column when the most recent build is not successful. Minor cleanups. Refactorings.