Parellelized testing. Caught a lot of bugs.
diff --git a/tests/test_strings.py b/tests/test_strings.py
index 001456d..a2f9483 100644
--- a/tests/test_strings.py
+++ b/tests/test_strings.py
@@ -1,4 +1,4 @@
-'''Tests string operations.'''
+"""Tests string operations."""
 
 from __future__ import absolute_import