Merged in [16965] from rjsparks@nostrum.com:

    Added typing to requirements.txt.
 - Legacy-Id: 16988
Note: SVN reference [16965] has been migrated to Git commit bc8f449

Author: levkowetz

requirements.txt

@@ -60,6 +60,7 @@ sqlparse>=0.2.2
 tblib>=1.3.0
 tqdm>=3.7.0
 Trac>=1.0.10,<1.2
+typing>=3.7.4.1
 Unidecode>=0.4.18
 #wsgiref>=0.1.2
 xml2rfc>=2.9.3,!=2.6.0