chore(main): release 1.16.0 (#408)

Co-authored-by: Brent Shaffer <[email protected]>

Author: release-please[bot]

CHANGELOG.md

@@ -1,5 +1,19 @@
 # Changelog
 
+## [1.16.0](https://github.com/googleapis/gax-php/compare/v1.15.0...v1.16.0) (2022-08-10)
+
+
+### Features
+
+* additional typehinting ([#403](https://github.com/googleapis/gax-php/issues/403)) ([6597a07](https://github.com/googleapis/gax-php/commit/6597a07019665d91e07ea0a016c7d99c8a099cd2))
+* drop support for PHP 5.6 ([#397](https://github.com/googleapis/gax-php/issues/397)) ([b888b24](https://github.com/googleapis/gax-php/commit/b888b24e0e223784e22dbbbe27fe0284cdcdfc35))
+* introduce startApiCall ([#406](https://github.com/googleapis/gax-php/issues/406)) ([1cfeb62](https://github.com/googleapis/gax-php/commit/1cfeb628070c9c6e57b2dde854b0a973a888a2bc))
+
+
+### Bug Fixes
+
+* **deps:** update dependency google/longrunning to ^0.2 ([#407](https://github.com/googleapis/gax-php/issues/407)) ([54d4f32](https://github.com/googleapis/gax-php/commit/54d4f32ba5464d1f5da33e1c99a020174cae367c))
+
 ## [1.15.0](https://github.com/googleapis/gax-php/compare/v1.14.0...v1.15.0) (2022-08-02)
 
 

VERSION

@@ -1 +1 @@
-1.15.0
+1.16.0