Does not detect promises in some cases

[orbitbot]

I didn't do thorough testing, but noticed a problem with some code and managed to create a simple example of a false negative:

function boo() {
  return new Promise(function(resolve, reject) { resolve() }));
}

[tbusser]

Sorry for the late reply. I will look into it, expect it should be easy to correct.

[tbusser]

Improved Promise detection has been released.