add .netstandard 1.1 and net40 targets
- netstandard 1.1 is possible.
- netstandard 1.0 is not without a fat dirty hack
- netframework 4.0 is possible
- netframework 3.5 NOT FIXABLE because Task + concurrent missing
Main issues are Marshal.PtrToStructure
, RuntimeInformation
, remove SuppressUnmanagedCodeSecurity
.