Merge pull request #191 from LCTT/dependabot/pip/bleach-3.1.1

Author: dependabot-preview[bot]

requirements.txt

@@ -1,7 +1,7 @@
 apipkg==1.5
 atomicwrites==1.3.0
 attrs==18.2.0
-bleach==3.1.0
+bleach==3.1.1
 certifi==2019.6.16
 cffi==1.12.3
 chardet==3.0.4