Great toolbox, but there are clearly some typos and errors. Capitalized filenames causes warnings (or the fact that they don't match the functions calls with respective to caps).
Also, why does bicoherx and bispecdx have three inputs when most people only have two inputs for a cross-bicoherence or cross-bispectrum analysis? Anyone figure this issue out? Which two inputs should we use? (eg x-x-y, x-y-x, etc)