feat: Minor improvements on ecotaxa

[saeedehsp]

closes #xxxx

• tests added
• all tests pass
• documentation
• AUTHORS entry
• Changelog entry

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📚 Documentation preview 📚: https://morphocut--109.org.readthedocs.build/en/109/

[codecov]

Codecov Report

Merging #109 (3351b64) into master (945f6ee) will increase coverage by 0.12%.
The diff coverage is 100.00%.

❗ Current head 3351b64 differs from pull request most recent head caee4e9. Consider uploading reports for the commit caee4e9 to get more accurate results

@@            Coverage Diff             @@
##           master     #109      +/-   ##
==========================================
+ Coverage   79.48%   79.61%   +0.12%     
==========================================
  Files          27       27              
  Lines        2223     2222       -1     
  Branches      382      381       -1     
==========================================
+ Hits         1767     1769       +2     
+ Misses        379      377       -2     
+ Partials       77       76       -1     

Impacted Files	Coverage Δ
src/morphocut/contrib/ecotaxa.py	75.77% <100.00%> (+0.54%)	⬆️

... and 1 file with indirect coverage changes