Latest version of org.specs2:specs2-matcher-extra_sjs0.6_2.13.0-M4
https://javadoc.io/doc/org.specs2/specs2-matcher-extra_sjs0.6_2.13.0-M4
Current version 4.3.4
https://javadoc.io/doc/org.specs2/specs2-matcher-extra_sjs0.6_2.13.0-M4/4.3.4
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.specs2/specs2-matcher-extra_sjs0.6_2.13.0-M4/4.3.4/package-list