Feature request: add parser boolean option to leave relative paths in the URL.

[evilsocket]

Hi all, for a project of mine I'd need this library to optionally leave relative paths unparsed (another reference). This seems unavoidable due to this piece of code in the parsing logic. It would be nice if a parsing boolean option were to be added so that that condition can be bypassed, resulting in ".." be left alone and handled by the server.