Bump version

src/goldrush.app.src

@@ -1,6 +1,6 @@
 {application, goldrush, [
     {description, "Erlang event stream processor"},
-    {vsn, "0.1.7"},
+    {vsn, "0.1.8"},
     {registered, []},
     {applications, [kernel, stdlib, syntax_tools, compiler]},
     {mod, {gr_app, []}},