0.10.0

Breaking changes

• Replace ad-hoc API with a Transport trait that can be implemented to change the way the request is sent
• Stricter checking of server headers
• Removed the nested Result you get when performing a call
• Restructure the RequestError type to better hide details the user shouldn't need to see
• Rename RequestError to just Error to better match what other crates do
• Removed the RequestResult type alias in favor of explicitly naming the result type

New Features

• Make the reqwest dependency optional - you can opt out and define your own Transport instead
• Add Request::call_url, an easy to use helper that calls a &str URL without needing to depend on reqwest in downstream crates
• Add the http module, containing a few helper methods for writing custom reqwest-based Transports
• Derive a few more useful traits (#34)
• Implement From<i64> for Value (#33)
• Add methods Value::get and Value::as_*, implement std::ops::Index for Value for convenient access to wrapped
  data (#37).