chore(release): prepare 5.1.0

Author: ffoodd

a11ycss-webextension-chrome.zip

@@ -2,12 +2,12 @@
   "title": "a11y.css",
   "name": "a11y.css",
   "description": "This file aims to warn front-end devs about mistakes and potential accessibility failures - but it also helps to rate client-side code and to spot its weaknesses.",
-  "version": "5.0.3",
+  "version": "5.1.0",
   "style": "css/a11y-en.css",
   "author": {
     "name": "Gaël Poupard",
     "url": "https://www.ffoodd.fr",
-    "email": "gael@ffoodd.fr"
+    "email": "gael+github@ffoodd.fr"
   },
   "keywords": [
     "a11y",