Vector2dggs

What's Changed
* more efficient parent cell repartioning by alpha-beta-soup in https://github.com/manaakiwhenua/vector2dggs/pull/15
* No longer errors when some rows have null geometry by alpha-beta-soup in 13
* better tmp directory handling by alpha-beta-soup in 12


**Full Changelog**: https://github.com/manaakiwhenua/vector2dggs/compare/v0.3.3...v0.4.0

Equivalent change to output partitioning pattern to https://github.com/manaakiwhenua/raster2dggs/releases/tag/v0.2.3, so that outputs are aligned.

- 13

Fixes:
- https://github.com/manaakiwhenua/vector2dggs/issues/10

Checks validity of input geometry when cutting geometries by threshold.

Adds support for vector data read via database connections (leveraging geopandas' `read_postgis`, without chunking).