Support Visual Studio "14"
Update VSBase debugging extension to support Visual Studio "14"
Merge pull request #45 from sharwell/dev14

Visual Studio "14"
Update Shell.Utility and Text.Utility to only have a single assembly targeting VS 2010+. Rely on binding redirection for it to work in extensions limited to newer releases.
Add the ProvideBindingPathAttribute to Shell.Utility.10
Remove unnecessary version range restriction

The commenter interfaces assembly is immutable, so any newer version of the package is acceptable and may provide updated documentation.
Simplify version reference in NuGet package specification