Channel order

[Dominik-Vogel]

As of now channels are not given in any particular order:

    @property
    def channels(self):
        """
        The channels that has something on them
        """
        chans = [key for key in self._data.keys()]
        return chans

[jenshnielsen]

[key for key in self._data.keys()] should be list(self._data.keys())?

[WilliamHPNielsen]

I guess sorted(list(self._data.keys())) is what we are really after.