Release v1.6.0 (#324)
* Update version and changelog for v1.6.0
* Update docs
diff --git a/CHANGELOG b/CHANGELOG
index c0a6693..3a754d1 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,24 @@
+v1.6.0
+ Version 1.6.0
+
+ Release to drop support for Python 2.6 and add support for google-auth.
+
+ - Support for Python 2.6 has been dropped. (#319)
+ - The credentials argument to discovery.build and discovery.build_from_document
+ can be either oauth2client credentials or google-auth credentials. (#319)
+ - discovery.build and discovery.build_from_document now unambiguously use the
+ http argument to make all requests, including the request for the discovery
+ document. (#319)
+ - The http and credentials arguments to discovery.build and
+ discovery.build_from_document are now mutually exclusive, eliminating a
+ buggy edge case. (#319)
+ - If neither http or credentials is specified to discovery.build and
+ discovery.build_from_document, then Application Default Credentials will
+ be used. The library prefers google-auth for this if it is available, but
+ can also use oauth2client's implementation. (#319)
+ - Fixed resumable upload failure when receiving a 308 response. (#312)
+ - Clarified the support versions of Python 3. (#316)
+
v1.5.5
Version 1.5.5