Switch to side-by-side view

--- a/requirements.txt
+++ b/requirements.txt
@@ -84,5 +84,5 @@
 coverage==3.3.1
 mock==0.6.0
 nose==0.11.3
-poster==0.7.0
-pytidylib==0.2.1
+poster>=0.5
+pytidylib>=0.1.2