Update Python support and links

[csala]

Update CI settings and dependencies to support the latest python versions.
Update all the links to point at the new MLBazaar organization.

[codecov-io]

Codecov Report

Merging #129 (b9a6142) into master (0fac3ce) will increase coverage by 10.31%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master     #129       +/-   ##
===========================================
+ Coverage   79.83%   90.15%   +10.31%     
===========================================
  Files           5        4        -1     
  Lines         868      721      -147     
===========================================
- Hits          693      650       -43     
+ Misses        175       71      -104     

Impacted Files	Coverage Δ
mlblocks/__init__.py	100.00% <ø> (ø)
mlblocks/mlblock.py	91.86% <0.00%> (+0.13%)	⬆️
mlblocks/mlpipeline.py	87.10% <0.00%> (+0.16%)	⬆️

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