fix ancient issue with hedgehogs sliding through/into think gaps; fixes issue #542; could and should be optimized (also to make sure that hogs can't slide through little pixel turds) - feel free to do so =P

#include <QtGui/QApplication>
#include "mainwindow.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}