Changelog for 7.14 (#1505)

docs/changelog.asciidoc

@@ -1,6 +1,59 @@
 [[changelog-client]]
 == Release notes
 
+[discrete]
+=== 7.14.0
+
+[discrete]
+==== Features
+
+[discrete]
+===== Support for Elasticsearch `v7.14`
+
+You can find all the API changes
+https://www.elastic.co/guide/en/elasticsearch/reference/7.14/release-notes-7.14.0.html[here].
+
+[discrete]
+===== Verify connection to Elasticsearch https://github.com/elastic/elasticsearch-js/pull/1487[#1487]
+
+The client will verify if it's working with a supported release of Elasticsearch.
+Elastic language clients are guaranteed to be able to communicate with Elasticsearch or Elastic solutions running on the same major version and greater or equal minor version.
+
+Language clients are forward compatible; meaning that clients support communicating with greater minor versions of Elasticsearch. Elastic language clients are not guaranteed to be backwards compatible.
+
+[discrete]
+===== Add api compatibility header support https://github.com/elastic/elasticsearch-js/pull/1478[#1478]
+
+If you configure the `ELASTIC_CLIENT_APIVERSIONING` to `true` the client will send a compatibility header
+to allow you to use a 7.x client against a 8.x cluster. In this way it will be easier to migrate your code to a newer release of Elasticsearch.
+
+[discrete]
+===== Add support for bearer auth https://github.com/elastic/elasticsearch-js/pull/1488[#1488]
+
+Bearer authentication, useful for https://www.elastic.co/guide/en/elasticsearch/reference/current/security-api-create-service-token.html[service account tokens].
+Be aware that it does not handle automatic token refresh:
+
+[source,js]
+----
+auth: {
+  bearer: 'token'
+}
+----
+
+[discrete]
+===== Bulk update improvements https://github.com/elastic/elasticsearch-js/pull/1428[#1428]
+
+The final stats object will let you know how many `noop` operations happened.
+Also, a new `.stats` getter has been added to allow you to read the stats before
+the operation finishes.
+
+[source,js]
+----
+const b = client.helpers.bulk({ ... })
+...
+console.log(b.stats)
+----
+
 [discrete]
 === 7.13.0
 
@@ -197,7 +250,7 @@ cause while reading the body. This could lead to an unwanted
 ===== Add warning log about nodejs version support https://github.com/elastic/elasticsearch-js/pull/1349[#1349]
 
 `7.11` will be the last version of the client that will support Node.js v8,
-while `7.12` will be the last one that supports Node.js v10. If you are eusing 
+while `7.12` will be the last one that supports Node.js v10. If you are using
 this versions you will see a `DeprecationWaring` in your logs. We strongly
 recommend to upgrade to newer versions of Node.js as usng an EOL version will
 expose you to securty risks.