Allow explicit return type object

[metoule]

No longer omit the conversion expression when the return type is explicitly object.
Force the return type of a lambda expression to typeof(void) to prevent the emission of a conversion expression.

Fixes #185

[davideicardi]

Thank you! I will look at this better in the following days.
It looks a little wrong to use void in that case, maybe we can find some alternatives ...

[metoule]

I agree that it's a bit wrong to use void in that case.. I considered a few alternatives that didn't feel great either:

• creating a dummy type DontEmitConversionExpression
• add a new parser settings

In the end, since this is purely internal for when we parse a lambda expression, it seemed acceptable to use void to minimize the impact.

If you have a better idea, I'm all for it :)

[davideicardi]

@metoule
I'm doing some experiments with the following solution #190 . It is still in progress and not sure that this will actually solve the problem or it will be feasible. But I will try ...
If you already have any kind of feedbacks please let me know.

If in some days I will not be able to complete it we can fallback to your solution, that in anycase looks like to be good. Ok?

[davideicardi]

LGTM! Thank you as usual!