sablanchard

`_nearest_neighbor` can be optimized for speed when using large networks by restricting the operation to be within a max search distance.

Pandana network instantiation `pdna.Network()` should fail gracefully when the nodes dataframe does not have the correct index set as its node id. Currently network creation function will throw a memory...

- updates to support package builds of Python 3.9 and 3.10 - updates to address Shapely depreciation of iterating over multi-part geometries - bump up minimum supported version of geopandas...