Extended kernel example with more examples and more extensive comments.
Extended kernel example with more examples and more extensive comments.

dftlibs/xcfun,dftlibs/xcfun,robertodr/xcfun,dftlibs/xcfun,robertodr/xcfun,bast/xcfun,bast/xcfun,dftlibs/xcfun,bast/xcfun,bast/xcfun,robertodr/xcfun,robertodr/xcfun