Update version and changelog for 0.8.0 release (#188)

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.8.0 (2019/01/02)
+
+* Support connection options :default_connection and :connection_builder when creating credentials that need to refresh OAuth tokens. This lets clients provide connection objects with custom settings, such as proxies, needed for the client environment.
+* Removed an unnecessary warning about project IDs.
+
 ## 0.7.1 (2018/10/25)
 
 * Make load_gcloud_project_id module function.

lib/googleauth/version.rb

@@ -31,6 +31,6 @@ module Google
   # Module Auth provides classes that provide Google-specific authorization
   # used to access Google APIs.
   module Auth
-    VERSION = '0.7.1'.freeze
+    VERSION = '0.8.0'.freeze
   end
 end