• Add ClientBuilder::pool_idle_timeout option.
• Add ClientBuilder::pool_max_idle_per_host option, deprecate max_idle_per_host.
• Add Response::content_length for WASM target.
• Enable TCP_NODELAY by default.
• Implement TryFrom<http::Request> for blocking::Request.
• Implement TryFrom<http::Request> for Request.
  • Removes From<http::Request> for Request.
  • 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.