Added debug options
(x) Fixed issue where .NET 4.0 references were added on non-.NET 4.0 platforms
(x) Fixed issue where cache was re-used over multiple builds and could possibly cause errors
(x) Fixed reference to System.Xml that was being removed if not yet available
Switched to using xdt instead of install script
NuGet Package is now a development dependency
Added support for nullable default value types (such as bool?)
Renamed directory for xdt transformations
Merge branch 'release/1.10.0'