DEVX-467: Fix missing import

Author: skylander86

formsg/utils.py

@@ -6,6 +6,7 @@
 from typing import Any
 from typing import Dict
 from typing import Mapping
+from typing import Optional
 from urllib.parse import urlparse
 
 import requests

setup.py

@@ -6,7 +6,7 @@
 
 setup(
     name='formsg',
-    version='0.1.5',
+    version='0.1.6',
     packages=['formsg'],
     description='A Python SDK for handling FormSG webhooks.',
     long_description=README,
@@ -17,6 +17,7 @@
     license='MIT License',
     install_requires=[
         'pynacl>=1.4.0',
+        'requests',
     ],
     python_requires='>=3',
     keywords='django cache',