Make the report easier to read by bolding the actual file name

The report is a little hard to read, because of the way the file name is fully qualified with the complete path within the Details column. The human eye has a hard time picking out where the path ends and where the actual file name begins. See for example the sample provided on the maven-changelog-plugin website: http://maven.apache.org/plugins/maven-changelog-plugin/images/sample-file-activity-report.PNG

I created a very simple example patch that just calls sink.bold() around the actual file name within the link. The resulting output has only a subtle difference, but it makes the report much more readable. See the attached jpg for an example of how this would look.