GwSharp is a C# library for accessing the Guild Wars 2 API. This library was designed to be similar to FileSystemWatcher, a class included in the Microsoft Developer Network's .NET Framework Class Library.
Google has rolled out Google Play Services SDK 11.6.0, which introduces major changes to how the APIs are structured. The company is deprecating one API while decoupling another. The idea is to reduce the amount of boilerplate code needed to use the APIs -- something everyone can be happy about.