[Ann] Oxygen XML Editor version 21 release

[Radu Coravu <radu_coravu@sync.ro>]

Hi everybody,

I'm happy to announce that we released Oxygen XML Editor version 21 a 
couple of days ago.
You can see the set of added features and improvements here:

https://www.oxygenxml.com/xml_editor/whats_new.html

We hope you will find the new Oxygen release useful for your work and as 
always we are open to improvement suggestions.

Regards,
Radu

Radu Coravu
<oXygen/> XML Editor
http://www.oxygenxml.com