The major issue addressed in this release is how wildcard would behave when it was provided a standalone wildcard (*) or a wildcard led pattern (*.foo). Prior to merging #11 sensible matches would fail and this has now been addressed.
For details on exactly what wildcard matches when, I'd recommend taking a look at the strings test file as that is fairly easy to read, plus if there is a case that you feel should be covered in the tests that isn't please feel free to raise a PR (it would be greatly appreciated).