[cs] Override native properties
[cs] generate delegate abstract
[cs] delegates: a little cleanup - do not mess with @:coreType
[cs] WIP - delegates
[cs] delegates - WIP
[cs] Delegates working when convertion function can be avoided
[cs] Automtic conversion function when needed. Closes #916
[cs] WIP - replicate all delegate fields
[cs] revert
[cs] revert
[cs] Std.is on delegates
[cs] Added unchecked attributes support
[cs] Unchecked attributes on parameters
[cs] tests update and changes update