A round of improvements to facilitate use and maintenance (no changes to results): - small UX improvements on lattice scripts. - Add an option to pass a list of lexeme ids to use for the next computation (instead of all lexemes). - More consistent import of paradigms / patterns. - Modernize the build process: move to pyproject.toml and remove setup.cfg. - Default to cpus=1 due to incompatibility with Mac & Windows. - Add option to autosort cells in heatmaps, according to result similarity. - rewrite docs and change docs theme.