v0.6.15

DFTK v0.6.15

Diff since v0.6.14

Merged pull requests:

• Make xc term AD-compatible (#892) (@a-azzali)
• Refactor bandstructure routines and json results (#895) (@mfherbst)
• Add basic Wannier.jl integration (#899) (@Technici4n)
• Move JSON3 dependency into extension module (#907) (@mfherbst)
• Update README (#912) (@mfherbst)
• Fix caching in CI (#915) (@epolack)
• Suggestion for CI simplification (#916) (@mfherbst)
• Fix typo (#918) (@lucifer1004)
• Remove obsolete interatomic potentials interface (#919) (@mfherbst)
• Misc changes (#920) (@epolack)
• Remove collinear spin c-interface, which is now native in spglib (#924) (@mfherbst)
• Fix a bug with scaling factors in the Hartree term (#926) (@ClementineBarat)
• Removing reference to old functions (#927) (@epolack)
• Move all requires-based optional code to extension modules (#930) (@mfherbst)

Closed issues:

• Add interface to GPAW (#133)
• Implement ONCVPSP (Norm-converving Vanderbilt PSPs) (#134)
• Togglable timings (#293)
• Implement nonlinear core correction (#335)
• Include Manifest.toml in the repo? (#922)