Provides interfaces and wrapper implementations for a small subset of the .NET BCL to allow mocking.

Provides:

• IConsoleWrapper a wrapper around System.Console
• IFileSystemWrapper and friends which provides a (fairly light) abstraction of some of the file system classes. Currently this supports relatively limited read only access.
• ITimeSource which provides the current local and UTC time as a substitute for calling DateTime.Now and DateTime.UtcNow directly.

Abstract²ion consists of a single assembly with no dependencies other than on the .NET Framework.