v1.1 Preview #2

This is a preview of the next release of the C# extension (v1.1). Here is what is new in v1.1:

• Preliminary support for dotnet test
• Fix for OmniSharp installation problems on networks with an http proxy
• Debugger support for an external console
• Debugger support for environment variables
• Support for debugging .NET Core 1.0.0 post RC2 builds
• Automatic web vs. console debugger configuration detection
• Detach support
• Fix expression evaluation errors when referencing assemblies which aren't currently loaded