[Diff since v0.5.4](https://github.com/JuliaMolSim/DFTK.jl/compare/v0.5.4...v0.5.5) **Merged pull requests:** - Integrate with DftFunctionals.jl (#633) (@mfherbst) - Cap tolerance in check on electron count (#682) (@mfherbst) - Graphene band structure (#683) (@antoine-levitt) - CompatHelper: bump compat for Interpolations to 0.14, (keep existing compat) (#685) (@github-actions[bot]) - Fixup stylistic aspects raised in #633 (#686) (@mfherbst) - Fix bug on magnetization in guess_density (#687) (@gkemlin) - Band energy derivatives using ForwardDiff (#688) (@mfherbst) - Add code for paper by Cazalis on 2D-confined graphene (#689) (@antoine-levitt)