renamed PathSpec Names to Include
added References to PathSpec
additional renames and clean up
added in progress IT for specifications referencing other specifications
renamed ExecutionConfig to ExecutionConfiguration
renamed exteranls with DTO added to existing name
added model representations of execution configuration and path spec
added solution folder for nuget packages
clean up
upgraded to use SC 1.0.0.22
updated stage execute method calls which no longer required the additional null param for CancelToken