Osmnx

- fix simplification of graphs with long rural roads
- reduce memory footprint of graph simplification
- remove disconnected self-contained rings from graph by default when simplifying
- improve speed and efficiency of project_graph, graph_to_gdfs, and graph_from_gdfs
- improve attribute value conversion in load_graphml
- expose precision parameter for adding bearings, elevations, speeds, and travel times
- fix config function clobber behavior
- fix graph periphery cleaning when clean_periphery=True but simplify=False
- rename settings useful_tags_path to the more appropriate useful_tags_way
- deprecate the timeout, memory, custom_settings, and max_query_area_size function params
- the params above are now accessible via config function and settings module
- deprecate old plot params and plot_shape function
- remove previously deprecated infrastructure parameter in favor of custom_filter

- better geometry subdividing for huge OSM queries
- better handling of maxspeed list values for simplified graphs
- downloader only retrieves url response from cache if no server remark
- deprecate graph creation infrastructure parameter in favor of flexible custom_filter
- remove deprecated functions: graph_from_file, clean_intersections, gdfs_to_graph

- major refactor of entire package
- clean up API and namespace
- new consolidate_intersections function with topological option
- new speed module to calculate graph edge speeds and travel times
- generalize POIs module to query with a flexible tags dict
- allow folium functions to accept FeatureGroup and kwargs
- all graph saving functions now take a filepath argument instead of folder/filename
- save shapefiles in single folder containing both nodes and edges
- optionally return distance and/or geometry in nearest edge search
- expose timeout and memory parameters in pois and footprints modules
- define default crs via epsg code instead of proj4 string
- update and simplify logging with timestamps
- graph metadata: add creation date and version, remove name
- replace inconsistent distance parameters with consistent dist parameters
- deprecate old clean_intersections function in favor of new consolidate_intersections
- deprecate old gdfs_to_graph function in favor of graph_from_gdfs
- deprecate old graph_from_file function in favor of graph_from_xml
- rename save_as_osm function -> save_graph_xml for consistency
- rename save_load module -> io
- remove old save_gdf_shapefile function
- drop support for python 3.5 and lower

- fix handling relations with missing type tag
- fix save_graph_geopackage handling numeric attributes
- fix load_graphml handling elevation and grade attributes
- improve edge finding algorithms to return edge key
- more informative graph_from_file data load error message
- refactor url-in-cache checking
- add timestamp helper function
- documentation improvements

- add ability to save graph as geopackage file
- add truncate_by_edge implementation in truncate_graph_polygon
- allow flexible overpass settings (e.g., to query by date)
- better handling of invalid footprint geometries
- geocode function now uses nominatim_request function
- improve .osm xml output
- improve one-way street handling
- fix graph projection overwriting original lat/lng
- fix redistribute_vertices function for MultiLineStrings

- fix .osm xml output
- fix for pandas 1.0