Waveguide (v0.0.3)

• Waveguide package:
  • Propagation module:
    • add conductivity_4k function to calculate conductivity at cryogenic temperatures using the anomalous skin effect model
  • Cavity module:
    • add ability to correct for S11 phase from iris or shunt susceptance
    • add function to estimate resonance order
  • Utility module:
    • add linear10, linear20 functions
  • Components module:
    • add thin_iris function to calculate the theoretical S-parameters of a thin iris
• Examples:
  • add simple waveguide example
  • add example of a WR-6.5 waveguide loaded with HDPE
  • add example comparing HFSS to theory
  • add example comparing conductor and dielectric loss
• Tests:
  • test against Scikit-RF
  • add example 4.14 in Gustrau, add test for lossy cavity