EHN: utils function only with np.array
Merge branch 'NEW_EDS_TEM_quantification' into edslab

Conflicts:
	hyperspy/_signals/eds_tem.py
	hyperspy/misc/eds/utils.py
DOC: improve example
Merge branch 'NEW_EDS_TEM_quantification' into edslab

Conflicts:
	hyperspy/_signals/eds_tem.py
BUG: model physical