v2.19.1
v2.19.0
adding unicode_is_ascii utility function
pass kwargs from send call to add_headers, per documentation
update json param's description to avoid confusion
for RFC-7616 add SHA-256 and SHA-512
cleanup certs.py
Separate collections from collections.abc
Check if host is invalid for proxy
Remove remaining references to removed, vendored packages (#4499)
Merge pull request #3429 from nateprewitt/docstring_cleanup
Fix requests.packages not having package attributes
Do not alter status_codes docstring if it is None