v0.9.0

Features

• Upgrade to tokio 0.1.
• Upgrade to hyper 0.12.
• Upgrade to native-tls 0.2.
• Add ClientBuilder::danger_accept_invalid_certs(bool) to disable
  certificate verification.
• Add RequestBuilder::bearer_auth(token) to ease sending bearer tokens.
• Add headers() and headers_mut() to multipart::Part to allow sending
  extra headers for a specific part.
• Moved request::unstable::async to reqwest::async.

Fixes

• Fix panicking when passing a Url with a file:// scheme. Instead, an
  Error is returned.

Breaking Changes

• Changed ClientBuilder::danger_disable_hostname_verification()
  to ClientBuilder::danger_accept_invalid_hostnames(bool).

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

  For single chains of method calls, this shouldn't affect you. For code that
  conditionally uses the builder, this kind of change is needed:

  // Old
  let mut builder = ClientBuilder::new();
  if some_val {
      builder.gzip(false);
  }
  let client = builder.build()?;
  
  // New
  let mut builder = ClientBuilder::new();
  if some_val {
      builder = builder.gzip(false);
  }
  let client = builder.build()?;

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

  See the previous note about ClientBuilder for affected code and
  how to change it.

• Removed the unstable cargo-feature, and moved reqwest::unstable::async
  to reqwest::async.

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

  // Old
  let part = multipart::Part::file(path)?
      .mime(mime::TEXT_PLAIN);
  
  // New
  let part = multipart::Part::file(path)?
      .mime_str("text/plain")?;

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

  The RequestBuilder has simple methods to set headers using strings, which
  can work in most places.

  // Old
  client
      .get("https://hyper.rs")
      .header(UserAgent::new("hallo"))
      .send()?;
  
  // New
  client
      .get("https://hyper.rs")
      .header("user-agent", "hallo")
      .send()?;

  To ease the transition, there is a hyper-011 cargo-feature that can be
  enabled.

  [dependencies]
  reqwest = { version = "0.9", features = ["hyper-011"] }

  And then usage:

  client
      .get("https://hyper.rs")
      .header_011(reqwest::hyper_011::header::UserAgent::new("hallo"))
      .send()?;