Been a while and this code is broken on any relevant.  Thanks. 2019.2 would be fine

https://forum.unity.com/threads/api-deprecation-faq-0-0-23.636994/

** Removed obsolete ComponentDataArray

https://docs.unity3d.com/Packages/com.unity.entities@0.0/changelog/CHANGELOG.htm...

It is no longer possible to get the older burst libs and the new ones mess up the maths deps.

Basically this great project is now bit rotting to the point of unusable. Any chance?