Merge pull request #1 from untitaker/urls-rewrite

Urls rewrite
Fix quote on 3.x
Should fix url encoding once and for all
Quoted/Encoded stuff is bytes
Fix path instead of qs quoting in url_fix
url_fix returns bytes
Fix _url_split
Don't pass charset as safe in iri_to_uri
Don't duplicate hostname in uri_to_iri
Simply unquote_to_bytes
Remove unused import
Make Href unicode only
Fix urljoin
Fix test_sorted_url_encode

We use an explicit key function that sorts on the text_type
representation of the key. This is implied due to coercion rules in 2.x
but doesn't work in 3.x
Add colon to default safe chars of url_quote
Fix url_quote call in Href.__call__
Fix Href
Fix bug in unquote