[Kst] extragear/graphics/kst/kst

[Brisset, Nicolas]

>   I should have mentioned also that you can create entirely 
> new Kst data objects with the KstExtension mechanism.  I did 
> that with the pulse generator extension.  It doesn't get a 
> special button in the data manager, but everything else 
> should work perfectly.
That could be interesting... I have just had a look at that extension
and I wonder what it's purpose is (and how you stop the creation of new
datapoints !). But you are right, as I said previously this filter
design idea we have might well need to be an extension as well.