Changed temp file handling to use tempfile.TemporaryDirectory, closes #59

tests/test_mojave_10_14_6.py

@@ -336,7 +336,7 @@ def test_photosdb_repr():
     photosdb = osxphotos.PhotosDB(dbfile=PHOTOS_DB)
     photosdb2 = eval(repr(photosdb))
 
-    ignore_keys = ["_tmp_db", "_tmp_files"]
+    ignore_keys = ["_tmp_db", "_tmp_files", "_tempdir", "_tempdir_name"]
     assert {k: v for k, v in photosdb.__dict__.items() if k not in ignore_keys} == {
         k: v for k, v in photosdb2.__dict__.items() if k not in ignore_keys
     }