v0.2.0

Features

• add Response.json() method (2d10ecc)
• add RedirectPolicy (e92b3e8)
• set an Accept: */* header by default if no Accept header is set (559ae80)
• add support for 307 and 308 redirects (a54447c)
• implement Sync for Client, and Send for RequestBuilder and Response (d18a53b)
• implement Send for Error (20b1610)
• implement std::fmt::Debug for all public types (d624b0e)

Breaking Changes

• Error::Serialize now has a Box<StdError + Send + Sync> instead of Box<StdError>
• RequestBuilder no longer has an associated lifetime (was RequestBuilder<'a>)