[Diff since v0.6.7](https://github.com/JuliaMolSim/DFTK.jl/compare/v0.6.7...v0.6.8) **Closed issues:** - Initial guess density currently broken on GPU (#841) - unit and equation of calculated force (#847) - Minus sign in Fourier transform of projectors (#855) **Merged pull requests:** - Fix initial density guess generation for GPU runs (#850) (@zhubonan) - Fix sign in Fourier transform of projectors (#856) (@antoine-levitt) - Switch to PrecompileTools (#857) (@mfherbst) - Fix GPU CI by enforcing to run on CUDA 11 (#859) (@mfherbst)