v0.8.0

• Lib: Update to nalgebra 0.29
• Lib: All the particle/mesh file IO code was moved from the splashsurf binary crate to the splashsurf_lib crate. They are behind the optional io feature flag. This allows using the IO code in tests of the library itself (previously the code was duplicated). But these functions may also be helpful to library users building their own pipeline if they wan to to quickly test code by e.g. loading particle data from files.
• Lib: Replace some unsafe blocks by using bytemuck instead
• Lib: Redesign the API for SPH kernel functions
• Lib: Add module sph_interpolation for the interpolation of normals, scalar fields and vector fields to arbitrary points using SPH based interpolation
• CLI: The --output-normals=on/off argument was renamed to --normals=on/off
• CLI: Add command line switch --sph-normals=on/off (enabled by default) to toggle whether to use SPH interpolation (instead of area weighted triangle normals) to compute normals when --normals is on
• CLI: Support for writing surfaces meshes (including normals) to OBJ files directly from the reconstruct subcommand (previously this was only supported for the convert subcommand) (See #29)
• CLI: Support for specifying names of point attribute fields via the argument --interpolate-attributes=... that should be interpolated to the reconstructed surface. Currently it is only possible to load these fields from VTK files and the interpolated values can also only be written if the output file format is VTK.
• CLI: All on/off arguments now require using an equal sign to set them. Primarily, this was done to prevent the CLI from accepting empty values which would be replaced by the respective default arguments. E.g. previously --normals was equivalent to the default --normals=off which is quite confusing. Now the default is only applied when the argument is not provided at all while --normals results in an error and --normals=on can be used to override the default.