Implement cross-bispectrum about pactools

[TomDLT]

Pactools implements 12 different CFC metrics, and the bispectrum is only one of them. For all the other ones, you can measure CFC using either the same channel for phase and amplitude, or two different channels (aka cross-channel CFC).

To measure cross-channel CFC, you need to give two signals to the fit method:

pactools/pactools/comodulogram.py

Lines 173 to 183 in f1ed709

	def fit(self, low_sig, high_sig=None, mask=None):
	"""Call fit to compute the comodulogram.
	Parameters
	----------
	low_sig : array, shape (n_epochs, n_points)
	Input data for the phase signal
	high_sig : array or None, shape (n_epochs, n_points)
	Input data for the amplitude signal.
	If None, we use low_sig for both signals.

[akatav]

Hi,
I assume that this is the same as cross-location(or cross channel) CFC. Is this enhancement implemented?
If not, can someone please mention the steps to do cross channel cfc ?