- update to 1.6.2:
* NameError: free variable from_start_to_end referenced before
assignment in enclosing scope #256
* Ignore points with no elevation when calculatin uphill/downhill
* Use python-build to also make wheels #237
* timezone lost in fields when cloning/copying parsed GPX file
* Parsing timezone-unaware GPX files #183
* Use python3 code

* Added type definitions
* get_nearest_location(location) has the property that if 'location'
is a point on the track, the point after 'location' on the track
- Initial package (v1.3.5)