VQkit v1.1 band-gap update
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Electronic structure > Band gap is now implemented for VASP and Quantum ESPRESSO.

VASP input data:
  EIGENVAL + OUTCAR/DOSCAR for E_F

Quantum ESPRESSO input data:
  bands.dat.gnu-style band data + pw.x output containing E_F

The analysis reports:
  - band gap in eV
  - metallic/gapless classification
  - direct or indirect gap
  - VBM and CBM energies relative to E_F
  - VBM and CBM k-point/high-symmetry locations when available

Output:
  VQkit_BAND_GAP.dat

Also included:
  - expanded QE Fermi-energy parsing
  - QE work-function average.x default awin corrected to 1.0 a.u.
