If you’re not one for the galactic cataclysm of “Avengers: Infinity War”, then you might find your local multiplex a fairly unwelcoming place this coming week. But, amidst the plethora of showing of, admittedly, one of the best films of the year so far, if you look carefully you might just uncover this cunningly counter-programmed gem of a movie, the next instalment in one of cinema’s longest…