This release will be delivered via a P2 repository.
There are some breaking changes in the (provisional) UI API that existing clients might need to accommodate to. They are detailed in the migration guide.
This release requires at least Eclipse Neon (4.6) and is compatible with Eclipse 2018-12 (4.10). Handly Xtext Integration layer supports Xtext 2.11 through 2.16. Handly requires Java 8 or later and has no operating system specific dependencies.