Update & test min reqs + handling upstream deprecation warnings

[jGaboardi]

This PR resolves #162 and resolves #170 along with other warning handling. Two other issues that need to be addressed, but can hold off for later: #167 & #168.

[codecov]

Codecov Report

Merging #169 (cf10304) into main (8dba8c4) will increase coverage by 0.8%.
The diff coverage is 100.0%.

@@           Coverage Diff           @@
##            main    #169     +/-   ##
=======================================
+ Coverage   75.7%   76.5%   +0.8%     
=======================================
  Files         19      19             
  Lines       1562    1579     +17     
=======================================
+ Hits        1182    1208     +26     
+ Misses       380     371      -9     

Impacted Files	Coverage Δ
splot/_viz_esda_mpl.py	100.0% <ø> (ø)
splot/tests/test_viz_value_by_alpha_mapl.py	100.0% <ø> (ø)
splot/_viz_utils.py	60.2% <100.0%> (+3.2%)	⬆️
splot/_viz_value_by_alpha_mpl.py	96.2% <100.0%> (+0.1%)	⬆️
splot/tests/test_viz_esda_mpl.py	100.0% <100.0%> (ø)
splot/tests/test_viz_giddy_mpl.py	100.0% <100.0%> (ø)
splot/tests/test_viz_libpysal_mpl.py	100.0% <100.0%> (ø)
splot/_version.py	40.7% <0.0%> (+2.7%)	⬆️

[martinfleis]

Thanks!

[martinfleis]

Can you change the title of the PR so it is clear what it is doing from skimming the commit history?

[jGaboardi]

Can you change the title of the PR so it is clear what it is doing from skimming the commit history?

Done.

[jGaboardi]

Good to merge?