Widgets.continuous_update has confusing documentation

[ceball]

The name and docstring for continuous_update make it sound like it does more than it actually does.

   continuous_update = param.Boolean(default=False, doc="""
        If true, will continuously update the next_n and/or callback, 
        if any, as a slider widget is dragged.""")

E.g. if you have Widgets.button=True and continuous_update=True, the next_n cells are not executed as any slider widget is dragged.

I think it should be something more like:

   slider_continuous_update = param.Boolean(default=False, doc="""
        If False, only set slider values when the mouse is released after dragging.""")

I'm proposing the name change because I missed that it only applies to slider widgets at first (in combination with what I'd consider "continuous update" being controlled by a parameter called button).

[jbednar]

Fine by me.