APIClient 0.0.5

• Make Configuration init public - #10, thanks to Theis Egeberg
• All send methods now return a new Response<T> struct containing not just the response value, but also data, request, response, and status code.
• Add value(for:) method that returns T – a replacement for the old send method
• Add data(for:) method returning Response<Data>
• Add options, head, and trace HTTP methods
• Method delete to use query instead of body