Update README.md

Update error messages

Cast assigns

Update docs

Fix typo

Remove deprecated and broken follow_redirects/1

Bump version

Add assigns (#492)

Rename UnexpectedResponseStatusError to UnexpectedStatusError

Add guard

Update docs

Raise when using compress_body with req_body_fun

Fix docs

`expect`: Support expect status category atoms (#533)

`run_plug`: Support non-utf8 request params (#495)