Merge branch '7.0'

Author: ezimuel

CHANGELOG.md

@@ -1,3 +1,8 @@
+## Release 7.0.1
+
+- Fixed SniffingConnectionPool removing the return type of Connection::sniff()
+  [#899](https://github.com/elastic/elasticsearch-php/pull/899)
+
 ## Release 7.0.0
 
 - Requirement of PHP 7.1 instead of 7.0 that is not supported since 1 Jan 2019.
@@ -14,9 +19,6 @@
 - Fix `json_encode` for unicode(emoji) characters [856](https://github.com/elastic/elasticsearch-php/pull/856)
 - Fix HTTP port specification using CURLOPT_PORT, not anymore in the host [782](https://github.com/elastic/elasticsearch-php/pull/782)
 
-### Testing
-
-
 ## Release 6.7.1
 
 - Added `track_total_hits` in `search` endpoint [0c9ff47](https://github.com/elastic/elasticsearch-php/commit/9f4f0dfa331c4f50d2c88c0068afd3062e6ea353)