bigquery: release bigquery/v1.7.0

This PR will be tagged as bigquery/v1.7.0

Change-Id: If5fdab18a1a24d3c00683d3ee0b1f22a75127738
Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/56030
Reviewed-by: Alex Hong <hongalex@google.com>
diff --git a/bigquery/CHANGES.md b/bigquery/CHANGES.md
index 864e392..c9a2280 100644
--- a/bigquery/CHANGES.md
+++ b/bigquery/CHANGES.md
@@ -1,5 +1,16 @@
 # Changes
 
+
+## v1.7.0
+
+* Add support for extracting BQML models to cloud storage.
+* Add support for specifying projected fields when ingesting
+  datastore backups.
+* Fix issue related to defining a range partitioning range
+  using default values.
+* Add bigquery/reservation/v1 API.
+* Various updates to autogenerated clients.
+
 ## v1.6.0
 
 * Add support for materialized views.
diff --git a/internal/version/version.go b/internal/version/version.go
index a4f4049..aafee13 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 = "20200417"
+const Repo = "20200506"
 
 // Go returns the Go runtime version. The returned string
 // has no whitespace.