Adds a new `metrics.visibility` module with visibility graph and isovist / viewshed functions.
4.7.0
Adds back improved closeness.
4.6.3
Adds a method `nx_generate_vis_lines` for generating line string representations for nodes - this is intended for visualisation purposes. Bumps documents.
4.6.1
Version bump wrapping several minor changes related to tweaking graph cleaning settings and updating the io method for OS Open Roads loading (due to changes to the downloadable file structure).
4.5.2
Shortens name for `generic_edges_geopandas_from_nx` to `geopandas_from_nx`
4.5.1
Adds `generic_edges_geopandas_from_nx` which allows exports of edge geometry from `cityseer` compatible `networkX` graphs.