The last film David Lowery wrote and directed, 2013’s Southern crime mood piece Ain’t Them Bodies Saints, caught some critical flak for its obvious debts to Terrence Malick’s whispery, wheat-swaying-in-the-sun photography. More than one review noted its promise, but emphasized Lowery’s need to find his own voice. Four years later, after a stint at Disney directing the live-action Pete’s Dragon, Lowery is back in the auteurish game, with a film seemingly designed to answer the charge of unoriginality. Even by A24’s idiosyncratic standards, A Ghost Story is a strange, alienating and singular piece of cinema. To give Lowery his due,…