Compatibility with Ubuntu

[npucino]

Package tests started to fail in Ubuntu

Up until commit 74b54e0, package testing worked for Windows, Mac and Ubuntu, in Python 3.8 and 3.9.

After that, tests on Ubuntu stopped working, which might be related to changes to the Ubuntu virtual environments.
https://github.com/actions/virtual-environments/labels/Announcement

However, by relaxing the requirements in the requirements.txt file as below:

Original requirements

geopandas==0.8.2
matplotlib==3.3.4
numpy==1.20.1
pandas==1.2.2
pysal==2.1
rasterio==1.2.0
richdem==0.3.4
scikit-image==0.18.1
scikit-learn==0.24.1
scipy==1.6.0
seaborn==0.11.1
tqdm==4.56.2
pooch==1.4.0
fuzzywuzzy

Relaxed requirements

geopandas==0.8.2
matplotlib
numpy
pandas
pysal==2.1
rasterio==1.2.0
richdem
scikit-image
scikit-learn
scipy
seaborn
tqdm
pooch==1.4.0
fuzzywuzzy

tests fail in all OS, which makes me thing is a packages-platform issue.

I need to update the code to use the latest packages and test again compatibility with Ubuntu.