Solve problem with SplitPowerBandByEpisodes. The function failed whena applied to wavelet spectral analysis because shift and size parameters did not exists. This issue has been removed from the function.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rhrv@176 edb9625f-4e0d-4859-8d74-9fd3b1da38cb