- Add ability to use pre-calculated TMM lookup tables directly in ray-tracing (as opposed to the currently-implemented functionality, which allows this only for a single surface in combination with the angular redistribution matrix method)
- Make automatic calculation of x and y limits for ray-tracing more robust
- Remove avoid_limits option, user can set `options.x_limits` and `options.y_limits` manually
- Add functions for generating a roughened planar surface (`rough_planar_surface`), roughened pyramids (`rough_pyramids`), and a (roughened or smooth) surface with hemispherical caps (`hemisphere_surface`)
- Remove random_pyramids function based on scan data
- Change behaviour in `single_ray_stack` so that the ray position is randomised to strike somewhere inside the unit cell, even if the surface is not periodic (`periodic = False` in options)
- Fix issue in tmm_structure.calculate where unphysical values for A_per_layer were calculated (datatype error in numpy array)?
- Fix test comparing periodic and non-periodic ray-tracing
- Change make_absorption_function to require a different result input format (the full result of the optical calculation, rather than just the profile part). This is to standardize its behaviour across all methods
- Add `overwrite` argument to process_structure() and rt_structure.calculate() to overwrite rather than load previously-generated lookup tables/redistribution matrices
- Fix bug in calculation of bulk absorption profile for backwards-travelling rays in angular redistribution matrix method (56)
- Fix bug in calculation of coefficients for TMM profile calculation generated during lookup table creation; if not all profile layers were requested, the `prof_layers` list was not getting flipped correctly to calculate the coefficients for the right layers. This only affected contributions to the absorption profile for rear incidence on a surface (usually negligible)