Add config for 4.20.0.

open/gcube-4.20.0.yaml

@@ -0,0 +1,24 @@
+#Release gCube 4.20.0
+
+gCube_release:
+  Version: 4.20.0
+  Components:
+  
+    Libraries:
+      - name: ckan2zenodo-library
+        version: 0.0.1
+
+    Services:
+      - name: gFeed
+        version: 1.0.1
+      - name: gcat
+        version: 1.4.2   
+
+    Widgets:
+      - name: ckan2zenodo-publisher-widget
+        version: 0.1.0
+     
+    Portlets:
+     - name: gcube-ckan-datacatalog
+       version: 1.8.0        
+