storage: release storage/v1.9.0

Change-Id: I03703dbcba9c4f35f347405d2c3d07be54951a62
Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/57110
Reviewed-by: Frank Natividad <franknatividad@google.com>
Reviewed-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Cody Oss <codyoss@google.com>
diff --git a/internal/version/version.go b/internal/version/version.go
index a31e75c..c37b161 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -26,7 +26,7 @@
 
 // Repo is the current version of the client libraries in this
 // repo. It should be a date in YYYYMMDD format.
-const Repo = "20200528"
+const Repo = "20200602"
 
 // Go returns the Go runtime version. The returned string
 // has no whitespace.
diff --git a/storage/CHANGES.md b/storage/CHANGES.md
index 2fe29e0..107c3d2 100644
--- a/storage/CHANGES.md
+++ b/storage/CHANGES.md
@@ -1,5 +1,12 @@
 # Changes
 
+## v1.9.0
+- Add retry for transient network errors on most operations (with the exception
+  of writes).
+- Bump dependency for google.golang.org/api to capture a change in the default
+  HTTP transport which will improve performance for reads under heavy load.
+- Add CRC32C checksum validation option to Composer.
+
 ## v1.8.0
 - Add support for V4 signed post policies.