Try implicit operator for method matching

[israellot]

This addresses #148

I believe it's fair because such calls would work seamless on actual C# code.

[codingseb]

Hye @israellot yes it looks nice and nothing seems to be break, all tests passes.
Maybe one or two tests could be added to ensure that we do not break this later as method override selection is not piece of cake so there is good risk that this part will change.

Anyway thank for this pull request.

I will already merge this.

[israellot]

Thanks! No problem, just submitted the unit test as well.