Changelog for this change, and bump Tested Up To to 5.4

Author: benlk

readme.txt

@@ -4,7 +4,7 @@ Donate link: https://inn.org/donate
 Tags: shortcode, iframe, javascript, embeds, responsive, pym, NPR
 Requires at least: 3.0.1
 Requires PHP: 5.3
-Tested up to: 5.3.2
+Tested up to: 5.4
 Stable tag: 1.3.2.3
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
@@ -50,6 +50,10 @@ Mobile view of the WordPress post with the NPR embed using Pym.js Shortcode:
 
 == Changelog ==
 
+= [next] =
+
+- Fixes a presentational error in the Pym.js Embeds Block's block inspector control within the editor. PR [#74](https://github.com/INN/pym-shortcode/pull/74) for issue [#72](https://github.com/INN/pym-shortcode/issues/72).
+
 = 1.3.2.3 =
 
 New features: