Latest version of org.specs2:specs2-matcher_2.12.0-M4
https://javadoc.io/doc/org.specs2/specs2-matcher_2.12.0-M4
Current version 3.8.1-scalaz-7.1
https://javadoc.io/doc/org.specs2/specs2-matcher_2.12.0-M4/3.8.1-scalaz-7.1
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.specs2/specs2-matcher_2.12.0-M4/3.8.1-scalaz-7.1/package-list