#49 (Nov 10, 2017, 3:59:32 PM)

1. if args None don't add to constraints (commit: 131f4a8) (details / githubweb)
2. update wing test; use correct w (commit: 7f90fce) (details / githubweb)

GitHub pull request #134 of commit 7f90fce26ec41bc9e1d8c389fdee70f51f3f2abf, no merge conflicts.