Update setup.py

Author: chita13

setup.py

@@ -2,7 +2,7 @@
 setup(
     name='unit-python-sdk',
     packages=['unit', 'unit.api', 'unit.models', 'unit.utils'],
-    version='0.13.2',
+    version='0.13.3',
     license='Mozilla Public License 2.0',
     description='This library provides a python wrapper to http://unit.co API. See https://docs.unit.co/',
     author='unit.co',