openHAB 4.0 Milestone discussion

Regarding what to to with JavaScript rules, the Milestone 1 announcement (openHAB 4.0 Milestone Builds) gives some tips. For JSR223 JavaScript rules in /automation/jsr223, I think installing the Nashorn add-on should be enough, but you should probably migrate to JS Scripting (/automation/js) to use it‘s great helper library.