Update celery from 4.1.1 to 4.2.0 (#99)

pyup-bot · Mariatta · commit 155175258732 · 2018-06-12T10:27:00.000-07:00
diff --git a/requirements.txt b/requirements.txt
@@ -4,4 +4,4 @@ gidgethub==2.5.0.post1
 cachetools==2.1.0
 requests==2.18.4
 redis==2.10.6
-celery==4.1.1
+celery==4.2.0
