Update geo-types to latest stable version

[ManevilleF]

the geo-types dependency is at version 0.6 when the latest release is 0.17

[nmandery]

geo-types is at 0.7.1 currently, the geo-crate is at 0.17 - this is always a bit misleading as the version tags in the github README only show the version of the geo crate.

Anyways, a version update of the dependencies would not hurt - I will do that before the next release.

[ManevilleF]

Oh yeah sorry about that, I don't know how I mixed that up

[nmandery]

I just had a look, the h3ron-ndarray crate depends on the gdal crate, for which the support for geo-types 0.7 is currently still unreleased. Once this is through, gdal will bring in ndarray 0.15, which is not yet supported in rust-numpy.

So I guess this update has to wait a bit.