bump WP tested-up-to version 5.7

closes #735

README.md

@@ -5,7 +5,7 @@
 > Distributor is a WordPress plugin that makes it easy to distribute and reuse content across your websites — whether in a single multisite or across the web.
 
 [![Support Level](https://img.shields.io/badge/support-active-green.svg)](#support-level) [![Build Status](https://travis-ci.org/10up/distributor.svg?branch=trunk)](https://travis-ci.org/10up/distributor)
-[![Release Version](https://img.shields.io/github/release/10up/distributor.svg)](https://github.com/10up/distributor/releases/latest) ![WordPress tested up to version](https://img.shields.io/badge/WordPress-v5.6%20tested-success.svg) [![License](https://img.shields.io/github/license/10up/distributor.svg)](https://github.com/10up/distributor/blob/develop/LICENSE.md)
+[![Release Version](https://img.shields.io/github/release/10up/distributor.svg)](https://github.com/10up/distributor/releases/latest) ![WordPress tested up to version](https://img.shields.io/badge/WordPress-v5.7%20tested-success.svg) [![License](https://img.shields.io/github/license/10up/distributor.svg)](https://github.com/10up/distributor/blob/develop/LICENSE.md)
 
 *You can learn more about Distributor's features at [DistributorPlugin.com](https://distributorplugin.com).*
 

readme.txt

@@ -2,7 +2,7 @@
 Contributors:      10up
 Tags:              content, distribution, syndication, management
 Requires at least: 4.7
-Tested up to:      5.6
+Tested up to:      5.7
 Requires PHP:      5.6
 Stable tag:        1.6.4
 License:           GPLv2 or later