Release Datastore v1.2.0 (#2447)

* Release Datastore v1.2.0
diff --git a/datastore/CHANGES.md b/datastore/CHANGES.md
index 7fa901e..9043a76 100644
--- a/datastore/CHANGES.md
+++ b/datastore/CHANGES.md
@@ -1,5 +1,9 @@
 # Changes
 
+## v1.2.0
+- Adds Datastore Admin API.
+- Documentation updates.
+
 ## v1.1.0
 
 - DEADLINE_EXCEEDED is now not retried.
@@ -15,4 +19,4 @@
 ## v1.0.0
 
 This is the first tag to carve out datastore as its own module. See:
-https://github.com/golang/go/wiki/Modules#is-it-possible-to-add-a-module-to-a-multi-module-repository.
\ No newline at end of file
+https://github.com/golang/go/wiki/Modules#is-it-possible-to-add-a-module-to-a-multi-module-repository.
diff --git a/internal/version/version.go b/internal/version/version.go
index c37b161..f2d6e58 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 = "20200602"
+const Repo = "20200612"
 
 // Go returns the Go runtime version. The returned string
 // has no whitespace.