Revert "Unskip processing"

This reverts commit e0e8dc3e37a2b72eb3ec75bebddfe6830702624a.
Revert "Revert "Start sigma=x(0) in kurtosis (no need to normalize)""

This reverts commit 9a4658608bbbb84cb1bf58db3c5435068dabaa48.
Revert "Propagated rec_kurtosis change"

This reverts commit 8236e2b96a256006c5680bd31b74fbeaa63bf629.
Revert "Start sigma=x(0) in kurtosis (no need to normalize)"

This reverts commit 1a405376e7097de02ba8de4f7fbcb95ff10aaa92.
Revert "Modified test to give window length as kurtosis parameter"

This reverts commit a71f30700f2f3cb00d62799e28d96aae9a3673f4.
Revert "Changed input of recursive kurtosis to window length"

This reverts commit d201b2b51c3f6cce75440ccdcb83b089d9776406.
Modified call to rec_kurtosis