Ari Aster has not only proven himself to be a great director of horror (as he did so expertly in his 2018 feature debut “Hereditary”) but a great filmmaker as he takes his new film, “Midsommar” to the level of Art. According to Aster, a very bad breakup led to the creation of this spine-chilling nightmare, one made even more frightening due to the fact that it all takes place under the bright light of the sun. Our director gives us nowhere