next-updater has upgraded 5 dependencies

Hi!

I have upgraded dependencies to the latest non-breaking versions

    opener 1.3.0 -> 1.4.0
    check-types 1.1.1 -> 1.4.0
    grunt-contrib-jshint 0.8.0 -> 0.10.0
    grunt 0.4.2 -> 0.4.5
    grunt-bump 0.0.13 -> 0.0.16

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