all: release v0.27.0 (#533)

Co-authored-by: Chris Broadfoot <cbro@golang.org>

CHANGES.md

diff --git a/CHANGES.md b/CHANGES.md
index 98831cd..5ac4bc2 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,19 @@
+# v0.27.0
+
+## Changes
+
+- gensupport:
+  - Expand retryable errors to include wrapped errors and transient network
+    failures.
+  - Add retry for the initial request in a resumable or multipart upload.
+- transport/http:
+  - Don't reuse a base transport between clients. This fixes a race condition in
+    defaultBaseTransport.
+- Various updates to autogenerated clients.
+
+_Please note:_ the release version is not indicative of an individual client's
+stability or version.
+
 # v0.26.0
 
 ## Changes

internal/version/version.go

diff --git a/internal/version/version.go b/internal/version/version.go
index 9cb8ff5..a25e605 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -10,4 +10,4 @@
 
 // Repo is the current version of the client libraries in this
 // repo. It should be a date in YYYYMMDD format.
-const Repo = "20200613"
+const Repo = "20200616"