Update NuGet API publishing key.

release notes. #58.

Documentation for .HoistResponse()

Fixes #54 - Better pagination support.

Re #53 and #52. Mark all CreatedAt/UpdatedAt as nullable to prevent d…

…eser exceptions.

Use nullable on Coinbase.Models.Account.CreatedAt and .UpdatedAt to a…

…void deser error. Fixes #52.

Use proxyUrl parameter.

Added Newtonsoft update to history. Prep 5.0.5 release.

Ensure all requests have some user agent string and API version attac…

…hed. Re: #47

Prep v5.0.3