Created originally on Bitbucket by CyrilleBonamy (Cyrille Bonamy)
Was already merged in Bitbucket before import, marked as merged by the import user
- issue 18 resolution : new compute_spectrum_kykx_unfolded function
- issue 19 resolution : error message updated
- clean code (spectrum_ky_kx_unfolded remove and add folded option to compute_spectrum_kykx function)
- small condition update