fix #9 add maven badge

[jlecordier]

fix #9

[codecov-commenter]

Codecov Report

Merging #13 (19f1e17) into main (400ee9f) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main      #13   +/-   ##
=========================================
  Coverage     95.31%   95.31%           
  Complexity      236      236           
=========================================
  Files            41       41           
  Lines           703      703           
  Branches         46       46           
=========================================
  Hits            670      670           
  Misses           28       28           
  Partials          5        5           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 400ee9f...19f1e17. Read the comment docs.

[jeanbisutti]

Thank you very much @jlecordier!