Bump django from 1.11.28 to 1.11.29 (#177)

Bumps [django](https://github.com/django/django) from 1.11.28 to 1.11.29.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@1.11.28...1.11.29)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -1,4 +1,4 @@
-Django==1.11.28
+Django==1.11.29
 Pygments==2.1.3
 Whoosh==2.7.4
 black==18.9b0