After a four-month hiatus, London’s museums and galleries have finally been allowed to dust the cobwebs off their canvases and fling open their doors to those seeking a cultural fix. From Yayoi Kusama’s Infinity Mirror Rooms to Tracey Emin’s artistic duet with Edvard Munch and David Hockney’s iPad drawings of unfolding Spring, here are some of the upcoming must-see exhibitions in London:.