py3 fix: use six StringIO import

manu-chroma · manu-chroma · commit 150730c03b21 · 2017-06-27T19:48:10.000+05:30
diff --git a/schema_salad/ref_resolver.py b/schema_salad/ref_resolver.py
@@ -16,7 +16,7 @@
 
 
 from . import validate
-from schema_salad.utils import aslist, flatten
+from .utils import aslist, flatten
 from .sourceline import SourceLine, add_lc_filename, relname
 
 import requests
