Update minimatch from 0.x to 3.x

[gilligan]

I noticed a warning during the npm install of our app relating to minimatch:

npm WARN deprecated minimatch@0.3.0: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue

istanbul f.ex. depends on an old fileset version and there is a ticket already for replacing fileset entirely that I also contributed to: gotwarlost/istanbul#638 - That being said I wonder if you would be willing to accept this PR and release a 0.2.1 version of fileset to get rid of the old minimatch version right away.

[mklabs]

Hi @gilligan,

Please update your fileset dependency to 2.0.x, it has been fixed recently.

[mklabs]

And let me know if it works correctly, and as expected. I didn't updated the documentation but the API surface remained the same.

[gilligan]

@mklabs i think you did not get what I meant ;) if fileset was a direct dependency under my control I would obviously just update. However various packages depend on old fileset 0.2.x and i can't update those obviously ;)