(February 27, 2017)
Add urlutils module, with URL type and find_all_links function. also
update Sentinel for Python 3 falsiness
- Add urlutils module, complete with RFC3986-compliant
- Also add
urlutils.find_all_linksfunction, which heuristically
finds all links in plaintext, and creates URLs out of them.
- Update typeutils.Sentinel to be appropriately falsy on Python 3