Let people know that the ML is deprecated

README.md

@@ -11,7 +11,11 @@ libgit2 is licensed under a **very permissive license** (GPLv2 with a special Li
 This basically means that you can link it (unmodified) with any kind of software without having to
 release its source code.
 
-* Mailing list: <libgit2@librelist.org>
+* Mailing list: ~~<libgit2@librelist.org>~~
+    The libgit2 mailing list has
+    traditionally been hosted in Librelist, but Librelist is and has always
+    been a shitshow. We encourage you to [open an issue](https://github.com/libgit2/libgit2/issues)
+    on GitHub instead for any questions regarding the library.
     * Archives: <http://librelist.com/browser/libgit2/>
 * Website: <http://libgit2.github.com>
 * API documentation: <http://libgit2.github.com/libgit2>