Skip events when parsing the ABI from JSON

[maxholman]

This PR stops the ABI parsing from looking at anything but functions, avoiding some erroneous errors.

Bonus: typings + trailing whitespace fixes

Fixes #13

[simolus3]

Hm, if we use that approach, constructors and the default fallback function will no longer be available, right? What if we just put that

var type = element["type"];
if (type == "event") 
        continue;

right at the beginning of that for-loop? That should fix the mentioned issue as well without breaking constructors and fallback functions. Or is there anything I'm not seeing here?

[maxholman]

What if we just put that right at the beginning of that for-loop?

Oops, I didn't spot that code. That works nicely. Changes pushed 👍

[simolus3]

Thanks, looks good to me now. I'll try to look into the string decoding error tomorrow and then publish these changes on pub.