Latest version of org.specs2:specs2-matcher-extra_2.10
https://javadoc.io/doc/org.specs2/specs2-matcher-extra_2.10
Current version 3.8.2
https://javadoc.io/doc/org.specs2/specs2-matcher-extra_2.10/3.8.2
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.specs2/specs2-matcher-extra_2.10/3.8.2/package-list