authors in setup-5.1.0

- old
+ new

@@ -1,3 +1,5 @@
-Minero Aoki <aamine@loveruby.net>
-7rans <transfire@gmail.com>
+---
+- 7rans <transfire@gmail.com>
+- Minero Aoki <aamine@loveruby.net>
+
 