Latest version of org.json4s:json4s-ext_2.13.0-M4
https://javadoc.io/doc/org.json4s/json4s-ext_2.13.0-M4
Current version 3.6.1
https://javadoc.io/doc/org.json4s/json4s-ext_2.13.0-M4/3.6.1
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.json4s/json4s-ext_2.13.0-M4/3.6.1/package-list