rasterio 1.4.x regression

[bjlittle]

🐛 Bug Report

The recent release of rasterio 1.4.0 has resulted in a behaviour regression, see rasterio/rasterio#3191.

The following rasterio 1.4.1 patch to resolve this causes similar but different issues within geovista.bridge.Transform.from_tiff.

All of these issues can be resolved entirely within geovista without pinning or skipping rasterio versions by explicitly managing the shape of data passed into and out of rasterio.transform.xy.

[bjlittle]

I'm going to address this on the 0.5.x release branch and push a 0.5.2 patch release.

[bjlittle]

Closed by #1132