Changed the redirect types to be from the `redirect` module:
- `reqwest::RedirectPolicy` is now `reqwest::redirect::Policy`
- `reqwest::RedirectAttempt` is now `reqwest::redirect::Attempt`
- `reqwest::RedirectAction` is now `reqwest::redirect::Action`
Changed behavior of default policy to no longer check for redirect loops
(loops should still be caught eventually by the maximum limit).
Removed the `too_many_redirects` and `loop_detected` methods from
`Action`.
Added `error` to `Action` that can be passed any error type.
Closes#717
ce43f80d8b