Mark as unmaintained

ezzatron · ezzatron · commit d041be9c8723 · 2023-07-08T14:10:29.000+10:00
diff --git a/README.md b/README.md
@@ -1,3 +1,9 @@
+> # No longer maintained
+>
+> This package is no longer maintained. See [this statement] for more info.
+>
+> [this statement]: https://gist.github.com/ezzatron/713a548735febe3d76f8ca831bc895c0
+
 # PHP-LCS
 
 *An implementation of the 'longest common subsequence' algorithm for PHP.*
