opinions on additional calc functions

[tino]

> > I've also got an example/test spreadsheet, but didn't quite know where
> > to put it.
> 
> The right solution is to extend the existing function (import) tests in
> sc/qa/unit/subsequent_filters-test.cxx with the test file being in
> sc/qa/unit/data/ods/functions.ods

Ok, this is something I'll keep in mind for the future, but won't
be able to do quickly.

What about example files for the end user to see the functions of an
add-in in action? My example file is 130k.