next-updater has upgraded 7 dependencies

Hi!

I have upgraded dependencies to the latest non-breaking versions

    better-assert -> 1.0.2
    grunt-contrib-copy -> 0.7.0
    grunt-contrib-uglify -> 0.7.0
    grunt-deps-ok -> 0.5.2
    grunt-mocha-test -> 0.12.4
    mocha -> 2.1.0
    sinon -> 1.12.2

Truly yours, [next-updater](https://github.com/bahmutov/next-updater)