Updating CHANGELOG

Author: Jon Wayne Parrott

CHANGELOG

@@ -1,3 +1,14 @@
+v1.5.0
+  Version 1.5.0
+
+  Release to support oauth2client >= 2.0.0.
+
+  - Fix file stream recognition in Python 3 (#141)
+  - Fix non-resumable binary uploads in Python 3 (#147)
+  - Default to 'octet-stream' if mimetype detection fails (#157)
+  - Handle SSL errors with retries (#160)
+  - Fix incompatibility with oauth2client v2.0.0 (#182)
+
 v1.4.2
   Version 1.4.2