Enhanced parameter snatching

[delahee]

We use it to hide api behind abstracts, if it can help :)

ex: abstract GATracker(Int){
... myUberAPi here ...
}

I think there are powerful to do things to auto bind real native objects.

ps : We use an older version of the lib, I don't know if the code compiles :)

++ :)

[shoebox]

Need to test it, but i like the idea 👍

[shoebox]

Will be fixed by #17
There is a unit test for abstract calls and it seems to work.
It can be used too for jni non-static method call, as the first argument is always the instance of the java object.