Registers a property with this Solver object

        .. code-block:: python

            cube.register_property("reference_frequency", np.float64, 1.4e9)

        Parameters
        ----------
        name : str
            The name of this property.
        dtype : Numpy data type
            Numpy data type
        default : Should be convertable to dtype
            Default value for this value

def register_property(self, name, dtype, default, **kwargs):
        """
        Registers a property with this Solver object

        .. code-block:: python

            cube.register_property("reference_frequency", np.float64, 1.4e9)

        Parameters
        ----------
        name : str
            The name of this property.
        dtype : Numpy data type
            Numpy data type
        default : Should be convertable to dtype
            Default value for this value

        """
        if name in self._properties:
            raise ValueError(('Property %s is already registered '
                'on this cube object.') % name)

        P = self._properties[name] = AttrDict(name=name,
            dtype=dtype, default=default)

        #if not hasattr(HyperCube, name):
        if not HyperCube.__dict__.has_key(name):
                # Create the descriptor for this property on the class instance
            setattr(HyperCube, name, PropertyDescriptor(record_key=name, default=default))

        # Set the descriptor on this object instance
        setattr(self, name, default)

        # Should we create a setter for this property?
        setter = kwargs.get('setter_method', True)
        setter_name = hcu.setter_name(name)

        # Yes, create a default setter
        if isinstance(setter, types.BooleanType) and setter is True:
            def set(self, value):
                setattr(self,name,value)

            setter_method = types.MethodType(set, self)
            setattr(self, setter_name, setter_method)

            # Set up the docstring, using the supplied one
            # if it is present, otherwise generating a default
            setter_docstring = kwargs.get('setter_docstring', None)
            getattr(setter_method, '__func__').__doc__ = \
                """ Sets property %s to value. """ % (name) \
                if setter_docstring is None else setter_docstring

        elif isinstance(setter, types.MethodType):
            setattr(self, setter_name, setter)
        else:
            raise TypeError, ('setter keyword argument set',
                ' to an invalid type %s' % (type(setter)))

        return P