Geostructures

Implements multishapes

Fixes a problem publishing to pypi

Features:
Ability to convert hexmaps to FeatureCollections
Aggregation functions for determining total shape and unique entities
geojson custom time formatting
Increased speed of all functions using round_half_up
Coordinate XYZ (unit sphere) representation and Improved Circumscribing Circle function
Improvement of bounding box function

Changes:
Change ellipse properties to semi_major and semi_minor

Bug Fixes:

Fixes a bug in GeoPoint.from_wkt where negative values were not permitted

Features:
* Ellipse bounds are now exact
* Adds a new buffer_dt method to all shapes
* Hashers' hash_collection method now allows custom aggregation functions, but defaults to count (the previous behavior)

Changes:
* Renames vertices to edges

Bug Fixes:
* Fixes warning thrown by convex_hull property on collections
* Fixes issue with geopandas import/export
* Fixes bug where miniscule shapes would cause the NiemeyerHasher to return no geohashes

Overhauls to_shapefile and from_shapefile to use ZipFile
Adds a new method `strip_dt` to create a copy of a shape without its time bounds
H3 hexes drawn using plotly will now display their centerpoints on hover