Update test.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
Add AutoFormat.RemoveEmpty.Predicate, fixes #35.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
Fix rgb in border attribute with spaces, fixes #30.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>