Add myself to AUTHORS.md

c31d687b · Stefan Helfrich · bfffe42e · c31d687b
Commit c31d687b authored Jul 25, 2019 by Stefan Helfrich
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -6,6 +6,7 @@ title: Authors
 This material is the product of contributions from the following people:

 * Aliaksandr Halavatyi
+* Stefan Helfrich
 * Jean-Karim Hériché
 * Toby Hodges
 * Julius Hossain