Stable version 0.3.8. Now GPLv3!

This release is dedicated to Richard Stallman.
Happy hacking, and may we all live in a free GNUtopia!

ShellCheck.cabal

 Name:             ShellCheck
-Version:          0.3.7
+Version:          0.3.8
 Synopsis:         Shell script analysis tool
 License:          GPL-3
 License-file:     LICENSE