Handle root as specialcase in url_path()
Handle root as specialcase in url_path()

Before:
127.0.0.1:65260 tried to PUT on  (directory) but only OPTIONS, GET, DELETE, HEAD, and TRACE are allowed

After:
127.0.0.1:65260 tried to PUT on / (directory) but only OPTIONS, GET, DELETE, HEAD, and TRACE are allowed

thecoshman/http,thecoshman/http,thecoshman/http,thecoshman/http