Unvendor rfc3986 (#341)

* Add failing test for userinfo with '!' and '=' chars, which are allowed as per RFC3986

* Unvendor rfc3986. Also fixes issue with ! and = being invalid in userinfo

Author: KostyaEsmukov

.coveragerc

@@ -4,7 +4,6 @@ omit =
     hyper/compat.py
     hyper/httplib_compat.py
     hyper/ssl_compat.py
-    hyper/packages/*
 
 [report]
 fail_under = 100

.travis.yml

@@ -19,7 +19,7 @@ matrix:
 
 install:
   - ".travis/install.sh"
-before_script: "flake8 --max-complexity 15 --exclude 'hyper/packages/*' hyper test"
+before_script: "flake8 --max-complexity 15 hyper test"
 
 script:
   - ".travis/run.sh"

hyper/common/util.py

@@ -8,7 +8,7 @@
 from enum import Enum
 
 from hyper.compat import unicode, bytes, imap
-from ..packages.rfc3986.uri import URIReference
+from rfc3986 import URIReference
 from ..compat import is_py3