Tove is a biopic of the Finnish artist Tove Jansson who, most famously, created the Moomins, that gentle family of hippo-like trolls with the soft, velvety bellies which I remember reading about as a child when I was laid up with chicken pox. (The collector’s editions published by Sort of Books have restored the original artwork, are dazzling, and will take you right back, minus all that Calamine.)