v0.1.6

This releases the Fluent Requests milestone in which we establish the request-to-response API. Users can now not only create and parameterize requests, but also send them via the API, receive a response via the API, and even deserialize content bodies all without directly accessing the native HTTP API.

We still only support path and query parameters and do not yet provide helpers for accessing response headers or cookies, but in both cases users are still able to dip into the native HTTP API to get what they need.