Bump version 0.4.0: changed value representation for some types

src/mysql.app.src

@@ -18,6 +18,6 @@
 
 {application, mysql, [
     {description, "MySQL/OTP - Erlang MySQL client"},
-    {vsn, "0.3.0"},
+    {vsn, "0.4.0"},
     {modules, []}
 ]}.