Dependencies update

Update dependencies (moment, optimist, and devs)
    
Use fix versions everywhere for safe validation

Also got rid of the following warning in the tests:

    should parse a config specification: Deprecation warning: moment construction falls back to js Date. This is discouraged and will be removed in upcoming major release. Please refer to https://github.com/moment/moment/issues/1407 for more info.

Well bugger. There go readable timestamps, but probably for the best. I wonder if we can recover some readability by converting `May 5, 2013` to `moment("2013 05 05", "YYYY MM DD"); // string with format` ourselves. Maybe once moment.js disables it.