Bump maxminddb requirement

oschwald · oschwald · commit 5f3a4b4347dd · 2018-05-25T13:08:28.000-07:00
diff --git a/requirements.txt b/requirements.txt
@@ -1,2 +1,2 @@
 requests>=2.9
-maxminddb>=1.2.1
+maxminddb>=1.4.0
