reqwest breaking changes

• 0.8.8 \u2192 0.9.0breaking

  Changed `ClientBuilder::danger_disable_hostname_verification()`

• 0.8.8 \u2192 0.9.0breaking

  Changed `multipart::Part::mime()` to `mime_str()`.

• 0.8.8 \u2192 0.9.0breaking

  Changed `RequestBuilder` to be a by-value builder of by-ref.

• 0.8.8 \u2192 0.9.0breaking

  Changed `ClientBuilder` to be a by-value builder instead of by-ref.

• 0.8.8 \u2192 0.9.0removed

  The upgrade to `hyper` 0.12 means a temporary removal of the typed headers.

• 0.8.8 \u2192 0.9.0removed

  Removed the `unstable` cargo-feature, and moved `reqwest::unstable::async`

• 0.7.3 \u2192 0.8.0behavior

  A default timeout for `reqwest::Client` is used set to 30 seconds (#181)

• 0.7.3 \u2192 0.8.0breaking

  `Client::new` no longer returns a `Result`.

• 0.7.3 \u2192 0.8.0breaking

  `async::Response::body()` now returns a reference to the body instead of consuming the `Response`.

• 0.7.3 \u2192 0.8.0breaking

  `ClientBuilder` and `RequestBuilder` hold their errors till consumed (#189).

• 0.6.2 \u2192 0.7.0api

  `mime` has been upgraded to 0.3, with a very different API.

• 0.6.2 \u2192 0.7.0breaking

  The `RequestBuilder` methods all take `&mut self`, instead of moving the builder, and return `&mut Self`. (This shouldn't actually affect most people who are building a request in a single chain.)

• 0.6.2 \u2192 0.7.0breaking

  `Error::cause()` now returns `Error::get_ref().cause()`.

• 0.6.2 \u2192 0.7.0breaking

  hyper has been upgraded to 0.11, so `header`, `StatusCode`, and `Method` have breaking changes.

• 0.6.2 \u2192 0.7.0breaking

  `Response::status()` returns a `StatusCode` instead of `&StatusCode`.

• 0.6.2 \u2192 0.7.0breaking

  All methods on `Client` that start a `RequestBuilder` now return a `Result` immediately, instead of delaying the URL parse error for later.

• 0.6.2 \u2192 0.7.0removed

  All configuration methods have been removed from the `Client`, and moved to the `ClientBuilder`.

• 0.6.2 \u2192 0.7.0removed

  The `HttpVersion` type was completely removed.

• 0.5.2 \u2192 0.6.0api

  `RedirectPolicy::custom` receives different arguments, and returns different values. See the [docs](https://docs.rs/reqwest/0.6.0/reqwest/struct.RedirectPolicy.html#method.custom) for an example.

• 0.5.2 \u2192 0.6.0breaking

  The publicly exposed peer dependency serde was upgraded. It is now `[email protected]`. Mismatched version will give a compiler error that a serde trait is not implemented.

• 0.5.2 \u2192 0.6.0breaking

  `Error` is no longer an `enum`, but an opaque struct. Details about it can be checked with `std::error::Error::cause()`, and methods on `reqwest::Error` include `is_http()`, `is_serialization()`, and `is_redirect()`.

• 0.4.0 \u2192 0.5.0behavior

  The only breaking change is a behavioral one, all programs should still compile without modification. The automatic GZIP decoding could interfere in cases where a user was expecting the GZIP bytes, either to save to a file or decode themselves. To restore this functionality, set `client.gzip(false)`.

• 0.1.0 \u2192 0.2.0breaking

  `Error::Serialize` now has a `Box<StdError + Send + Sync>` instead of `Box<StdError>`

• 0.1.0 \u2192 0.2.0breaking

  `RequestBuilder` no longer has an associated lifetime (was `RequestBuilder<'a>`)

• 0.12.28 \u2192 0.13.0behavior

  `rustls` is now the default TLS backend, instead of `native-tls`.

• 0.12.28 \u2192 0.13.0behavior

  `query` and `form` are now crate features, disabled by default.

• 0.12.28 \u2192 0.13.0behavior

  `rustls` crypto provider defaults to aws-lc instead of _ring_. (`rustls-no-provider` exists if you want a different crypto provider)

• 0.12.28 \u2192 0.13.0breaking

  To use different roots, call `tls_certs_only(your_roots)`.

• 0.12.28 \u2192 0.13.0breaking

  `native-tls` now includes ALPN. To disable, use `native-tls-no-alpn`.

• 0.12.28 \u2192 0.13.0breaking

  **Breaking changes**:

• 0.12.28 \u2192 0.13.0breaking

  For example, prefer `tls_backend_rustls()` over `use_rustls_tls()`.

• 0.12.28 \u2192 0.13.0removed

  rustls roots features removed, `rustls-platform-verifier` is used by default.

• 0.12.28 \u2192 0.13.0removed

  Long-deprecated methods and crate features have been removed (such as `trust-dns`, which was renamed `hickory-dns` a while ago).

• 0.12.28 \u2192 0.13.0renamed

  `rustls-tls` has been renamed to `rustls`.

• 0.12.28 \u2192 0.13.0renamed

  Many TLS-related methods renamed to improve autocompletion and discovery, but previous name left in place with a "soft" deprecation. (just documented, no warnings)

• 0.11 \u2192 0.12api

  Http/hyper 1.0 upgrade. TLS backend features renamed; default TLS now rustls (was native-tls).

  Migration

  For native-tls, enable `features = ["native-tls"]` explicitly. Blocking API shape unchanged for most users.

• 0.10.4 \u2192 0.10.5behavior

  Enable TCP_NODELAY by default.

• 0.10.4 \u2192 0.10.5breaking

  This is technically a breaking change, but was a mistake. It was not valid to convert from an `http::Request` to a `reqwest::Request` in an infallible fashion. It would panic if the conversion was not possible. Instead, the implementation has been changed to `TryFrom` to indicate it could fail.

• 0.10.4 \u2192 0.10.5breaking

  Implement `TryFrom<http::Request>` for `Request`.

• 0.10.4 \u2192 0.10.5breaking

  Implement `TryFrom<http::Request>` for `blocking::Request`.

• 0.10.4 \u2192 0.10.5breaking

  Add `Response::content_length` for WASM target.

• 0.10.4 \u2192 0.10.5breaking

  Add `ClientBuilder::pool_idle_timeout` option.

• 0.10.4 \u2192 0.10.5deprecated

  Add `ClientBuilder::pool_max_idle_per_host` option, deprecate `max_idle_per_host`.

• 0.10.4 \u2192 0.10.5removed

  Removes `From<http::Request>` for `Request`.

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