[name=Fulvio] You can write comments like this.
TODO:
merge with updated yambo version (5.2.3)
prepare test-suite on corvinaTESTS: hBN standard, hBN + U, hBN + Covariant dipoles
add diagonal-only Hbare calculation as flag to Hbare_from_scratch + warning if ib/=ibp, in that case compute the full one
Recreate a parallel structure for the WF in Hbare_from_scratch before loading, following the QP case