+IMPORTANT: This call is used to test the connection and if succesful
+it returns the version number of the shop. If not succesful the
+returning function has to make sure a error string is returned in
+the same data structure. Details of the returning hashref:
+
+ my $connect = {};
+ $connect->{success} = 0 || 1;
+ $connect->{data}->{version} = '1234';
+ return $connect;
+
+=item C<set_orderstatus>
+