vibe-qc 0.4.0
Second tagged release. End-to-end EWALD_3D periodic SCF across
{RHF, UHF, RKS, UKS} × {Γ-only, multi-k}; ECP support via libecpint;
v0.4 API polish; level shift + Fermi-Dirac smearing on the periodic
SCF side; bundled basis + ECP libraries ship in the wheel.
See CHANGELOG.md [0.4.0] section for full notes.