- update changelog, stable tag

readme.txt

@@ -4,7 +4,7 @@ Tags: WPGraphQL, Cache, API, Invalidation, Persisted Queries, GraphQL, Performan
 Requires at least: 5.6
 Tested up to: 6.0
 Requires PHP: 7.4
-Stable tag: 0.3.0
+Stable tag: 0.3.1
 License: GPLv2 or later
 License URI: https://www.gnu.org/licenses/gpl-2.0.html
 
@@ -24,6 +24,13 @@ In order to use v0.2.0+ of WPGraphQL Smart Cache, you will need WPGraphQL v1.12.
 
 == Changelog ==
 
+= 0.3.1 = 
+
+- chore: update readme.txt with tags, updated "tested up to" version
+- chore: update testing matrix to run tests on more versions of WordPress and PHP
+- chore: update docs
+- chore: add icons and banner for WordPress.org
+
 = 0.3.0 =
 
 - feat: a LOT of updates to the documentation