adding DRAGONS version to header of outputs

recipe_system/reduction/coreReduce.py

@@ -417,6 +417,9 @@ def _sname(name):
             return newname
 
         for ad in outputs:
+            ver = __version__
+            if ver:
+                ad.phu['DRGNSVER'] = ver
             if self.suffix:
                 username = _sname(ad.filename)
                 ad.write(username, overwrite=True)