Semver doesn't mean major.minor.patch, it means fails.features.bugs(twitter.com)

    #!/usr/bin/env python

    python2
    python3
    python -> python2

    #!/usr/bin/env python3

    "dependencies": {
      "foo": "1.5.8",
      "bar": "1.3.7"
    }

    "dependencies": {
      "foo": "2.0.0",
      "bar": "1.3.7"
    }

    "dependencies": {
      "foo2": "1.0",
      "bar": "1.3.7"
    }

    module foo.v1.date

    module foo.v2.date

    "foo": "1.1.0"

    function foo-cool() {...}

    function foo-cool-v2 {...}