Add reading time to post header, remove purgecss because it was breaking CSS used by injected HTML.

package.json

@@ -14,12 +14,15 @@
   "type": "module",
   "dependencies": {
     "@11ty/eleventy-plugin-syntaxhighlight": "^5.0.2",
+    "@inframanufaktur/eleventy-plugin-clean-urls": "^1.0.2",
     "@sardine/eleventy-plugin-external-links": "^1.4.0",
     "eleventy-plugin-git-commit-date": "^1.0.2",
+    "eleventy-plugin-github-repos": "^0.1.8",
     "eleventy-plugin-inline-link-favicon": "^1.1.0",
     "eleventy-plugin-mastoarchive": "^0.2.0",
     "eleventy-plugin-poison": "^1.0.1",
     "eleventy-plugin-purgecss": "^0.6.0",
+    "eleventy-plugin-reading-time": "^0.0.1",
     "eleventy-plugin-recent-changes": "^1.0.1",
     "eleventy-plugin-webmentions": "^2.1.0"
   }