Adds wtracyliu to the AUTHORS file.

Author: sebleier

AUTHORS.rst

@@ -12,4 +12,5 @@ Todd Boland / boland <https://github.com/boland>
 Issac Kelly / issackelly <https://github.com/issackelly>
 Saverio / mucca <https://github.com/mucca>
 Matt Robenolt / mattrobenolt <https://github.com/mattrobenolt>
-Carl Meyer / carljm <https://github.com/carljm>
+Carl Meyer / carljm <https://github.com/carljm>
+wtracyliu / wtracyliu <https://github.com/wtracyliu>