[oXygen-sdk] [Ann] Oxygen XML Editor version 21 release

Hi everybody, We released a couple of days Oxygen XML Editor version 21 and the corresponding Author SDK. Our list of API improvements can be found here: https://www.oxygenxml.com/xml_editor/whats_new.html#21.0API As always we tried to keep Oxygen as backwards compatible as possible with plugins. Except for the Eclipse platform where we removed some very old API, deprecated API methods have remained unchanged and will continue to work. Although it still comes bundled with Java 1.8 (which is still the recommended Java version to run Oxygen) Oxygen 21 was tested and should work also with Java 11 without any changes. Regards, Radu Radu Coravu <oXygen/> XML Editor http://www.oxygenxml.com