PLEASE READ COMMENTS ABOUT 1.13 BELOW

This 1.0.2 r6 update has bug-fixes, new features, and a significantly improved core system (greatly increased efficiency!) and is the final version released limited to 1.12+earlier only.
This is build 1651.

Hey! So about Minecraft 1.13, ...

Denizen is a huge and complicated script engine, being maintained by developers that have a lot of dev-focused time but not always enough.
Minecraft 1.13 was a huge updated that altered a lot of basic minecraft functionality that the script engine relies on...

So we're a bit slow about updating fully.

We have a basic update to 1.13 available, you can find that in the dev builds here: http://ci.citizensnpcs.co/job/Denizen_Developmental/

^ So download that dev build if you're running a 1.13 server!

However, the update (at time of writing) is not fully functional, and we'd rather make sure it's 100% perfect before releasing on Spigot (especially because it can potentially cause problems for servers running 1.12 or older Minecraft versions (due to changes to available spigot APIs in the 1.13 update that our version back-support logic has to deal with), and we don't want to release a build that poses that risk!)

The biggest slow-down to updating is the sheer time-sink involved: so many things have changed that we have to test basically every tag/command/event/etc. as many of them need to be altered for compatibility with the way 1.13 works (and in a way that allows them to still work fine with 1.12 and older minecraft versions).

You can track details about the update and some of its pending issues here: https://github.com/DenizenScript/Denizen-For-Bukkit/issues/1788#issuecomment-406482105