BoltzTraP.jl: Julia implementation of BoltzTraP2

BoltzTraP v0.4.0

Diff since v0.3.4

Breaking changes:

• None. The 0.3 → 0.4 bump only starts a new compatibility series; no public API is removed or changed.

Added:

• Wannier interpolation transport path: solve_transport accepts a WannierInterpolator, sharing the Fourier path's transport engine.
• Si Wannier reference test in CI.
• Documented CoSb₃ baselines for both interpolation paths.
• Cross-platform-reproducible Wannier transport tensors: band velocities at degenerate k-points are built gauge-invariantly (averaged over approach directions) instead of depending on the LAPACK eigenbasis within a degenerate multiplet; models with no threshold-degenerate bands on the mesh are unchanged.

Closed issues:

• Add Wannier interpolator support (#53)
• Allow WannierInterpolator construction from a pre-built Wannier.InterpModel (#63)
• Add documentation page for the Wannier interpolation path (#64)
• Expand Citation list to cover the v0.4 Wannier path (#65)
• Register v0.3.4 (#70)
• Disambiguate "Integration" in docs page titles (Wannier.jl / DFTK.jl vs BZ) (#74)
• Sidebar: some extension pages nested in Guide (#75)
• Fourier transport path has no documented CoSb₃ reference values (#79)