Bump the version

src/urilib.app.src

 {application, urilib, [
   {description, "A RFC-3986 URI Library for parsing and building URIs"},
-  {vsn,"0.4.0"},
+  {vsn,"0.5.0"},
   {licenses, ["BSD"]},
   {links, [{"Github", "https://github.com/gmr/urilib"}]},
   {maintainers, ["Gavin M. Roy"]},