Geostructures

Adds features:
* Shape intersection and containment tests
* Adds the ability to create shapes and collections from geojson
* Adds the ability to create shapes and collections from shapely

Fixes bugs:
* Point-in-polygon not correctly accounting for holes
* Coordinate creation bug when creating from QDMS/DMS
* Removes precisenumbers from the list of dependencies

Adds features:
* Geohashing
* Geopandas support
* Filter tracks by time (without date)
* Defining holes in shapes using other shapes

Removes dependency on the precisenumbers package

Initial release