Upgrade to version 1.3.3 of dm.xmlsec.binding

Author: piotch

setup.py

@@ -32,7 +32,7 @@
     },
     test_suite='tests',
     install_requires=[
-        'dm.xmlsec.binding==1.3.2',
+        'dm.xmlsec.binding==1.3.3',
         'isodate>=0.5.0',
         'defusedxml==0.4.1',
     ],