updated test and parser for [stuff] tags

[ericeslinger]

Angular 2+ html elements can contain [square] (parentheses) and some special characters (*, @, and # at least).

This updates the test on xmlparser to reflect that and proposes an update to the matcher regex that supports that.

[ericeslinger]

ping - is there any chance we can get this pulled into the release channel? I imagine other people using less-than-slash to work with angular2/4 will be having this same problem.

[MarcPorciuncula]

Looks good, @mrhanlon has npm ownership of the package.

@mrhanlon Do you have any spare time to pull and publish this one?

[mrhanlon]

Done!