Defaults

- The 'dateformat' settings now default to the ISO-8601 standard of 'Y-M-D'.

test/bug.628.t

@@ -47,7 +47,7 @@ qx{../src/task rc:bug.rc add wait:\\"Wed Jan 01 2020\\" A buggy task 2>&1};
 
 # Result: Immediately delete the created task
 my $output = qx{../src/task rc:bug.rc waiting 2>&1};
-like   ($output, qr/1\/1\/2020/ms, 'a b D Y dateformat correctly parsed.');
+like   ($output, qr/Jan 01 2020/ms, 'a b D Y dateformat correctly parsed.');
 
 # Cleanup.
 unlink qw(pending.data completed.data undo.data backlog.data bug.rc);