CHANGELOG.md in google-cloud-datastore-1.5.0 vs CHANGELOG.md in google-cloud-datastore-1.5.1

@@ -1,15 +1,22 @@
 # Release History
 
+### 1.5.1 / 2019-02-13
+
+* Add `ReadOnlyTransaction` convenience methods:
+  * Add `ReadOnlyTransaction#query`
+  * Add `ReadOnlyTransaction#gql`
+  * Add `ReadOnlyTransaction#key`
+
 ### 1.5.0 / 2019-02-01
 
 * Make use of Credentials#project_id
   * Use Credentials#project_id
     If a project_id is not provided, use the value on the Credentials object.
     This value was added in googleauth 0.7.0.
   * Loosen googleauth dependency
     Allow for new releases up to 0.10.
-    The googleauth devs have committed to maintanining the current API
+    The googleauth devs have committed to maintaining the current API
     and will not make backwards compatible changes before 0.10.
 
 ### 1.4.4 / 2018-09-20
 
 * Update documentation.