Add simplejson 3.17.0

* Needed for requests to encode byte-strings to json

lib/simplejson/tests/test_str_subclass.py

@@ -0,0 +1,21 @@
+from unittest import TestCase
+
+import simplejson
+from simplejson.compat import text_type
+
+# Tests for issue demonstrated in https://github.com/simplejson/simplejson/issues/144
+class WonkyTextSubclass(text_type):
+    def __getslice__(self, start, end):
+        return self.__class__('not what you wanted!')
+
+class TestStrSubclass(TestCase):
+    def test_dump_load(self):
+        for s in ['', '"hello"', 'text', u'\u005c']:
+            self.assertEqual(
+                s,
+                simplejson.loads(simplejson.dumps(WonkyTextSubclass(s))))
+
+            self.assertEqual(
+                s,
+                simplejson.loads(simplejson.dumps(WonkyTextSubclass(s),
+                                                  ensure_ascii=False)))