Merge branch 'auth_callables' of https://github.com/idangazit/requests into develop

Conflicts:
	requests/models.py

diff --cc docs/user/advanced.rst
Simple merge

diff --cc docs/user/quickstart.rst
Simple merge

diff --cc requests/models.py
index ab121b9,0053c08..9ae95ca
--- 1/requests/models.py
--- 2/requests/models.py
+++ b/requests/models.py
@@@ -16,8 -17,7 +16,8 @@@ from datetime import datetim
  from .hooks import dispatch_hook
  from .structures import CaseInsensitiveDict
  from .status_codes import codes
 +from .packages import oreos
+ from .auth import HTTPBasicAuth
  from .packages.urllib3.exceptions import MaxRetryError
  from .packages.urllib3.exceptions import SSLError as _SSLError
  from .packages.urllib3.exceptions import HTTPError as _HTTPError