MagneticFieldSHTCExpander

Create grids of the solar magnetic field based on provided Spherical Harmonic Transform Coefficients (SHTC)

Physical motivation

See the physical theory page on the documentation website.

To-do

• Implement caching for assoc_legendre_func_table
• Provide a collect-like function for magnetic field at many (r, θ, φ)
• Write tests to cover real-world SHTC files
• Create documentation/Documenter.jl base
• Add coverage indicator
• Add dispatching based on Legendre polynomial table