chore(release): v0.21.0

Author: Conventional Changelog Action

composer.json

@@ -10,7 +10,7 @@
     "stats"
   ],
   "license": "MIT",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "homepage": "https://github.com/DenverCoder1/github-readme-streak-stats",
   "autoload": {
     "classmap": [