[Diff since v0.2.6](https://github.com/JuliaMolSim/DFTK.jl/compare/v0.2.6...v0.2.7) **Closed issues:** - Integrate with Xtals.jl (#389) - dVol as a field (#414) - Pymatgen namespaces change v2022.0.0 (#418) **Merged pull requests:** - Do a Rayleigh-Ritz at the end of direct minimization (#411) (@antoine-levitt) - Fix GGA non-spin-polarised XC kernel (#412) (@mfherbst) - Replace ForwardDiff by manual forces (#415) (@niklasschmitz) - CompatHelper: bump compat for "Polynomials" to "2.0" (#416) (@github-actions[bot]) - Suppress conditional package load warnings (#419) (@mfherbst)