Update release notes

I updated the NuGet specification for the framework and added release
notes for version 2.0.0.
Fix Clean build target

The Clean build target needed an addition to specify the Any CPU
platform when calling MSBuild to delete the outputs of the Visual
Studio projects/solution.
Fix NuGet deployment bug

There was a bug in the NuGet deployment for 2.0.0. The Process Monitor
integration source code was not included in the symbols package. I
added the source files.
Merge branch 'release/2.0.0' into develop