xproc 3.0, xmlcalabash 3 in readme

Author: aanno

README.md

@@ -230,7 +230,10 @@ Currently supported formats are:
 * [XProc](https://de.wikipedia.org/wiki/XProc)
   + [XProc Spec](https://www.w3.org/TR/xproc/)
   + [Introduction to XProc 3.0](https://www.xml.com/articles/2019/11/05/introduction-xproc-30/)
-  + [Calabash: XProc Implementation](http://xmlcalabash.com/)
+    - [XMLCalabash 3](https://github.com/xmlcalabash/xmlcalabash3)
+    - [JAFPL](https://jafpl.com/)
+    - [XProc 3.0 spec](https://xproc.org/)
+  + [Calabash 1: XProc Implementation](http://xmlcalabash.com/)
   + [MorganaXProc-III](https://www.xml-project.com/morganaxproc-iii/) (work-in-progress)
   + [Calabash Docs](https://github.com/ndw/xmlcalabash1-docs)
     - [Calabash Gradle Plugin](https://github.com/ndw/xmlcalabash1-gradle)