GECKO 3.1.3

[mihai-sysbio]

Main improvements in this PR:

• Fixes:
  • resolve a bug when saving the ecModel in xml format fix: save ec model xml #361
• Documentation:
  • update DOI in code and Readme chore: update-doi #362
• Features:
  • clearer error message for use of Docker in Matlab feat: clearer mac docker error #363

Instructions on merging this PR:

• This PR has main as target branch, and will be resolved with a merge commit.

[github-actions]

This PR has been automatically tested with GH Actions. Here is the output of the tests:

 
GECKO version 3.1.2 installed
Running geckoCoreFunctionTests
Done geckoCoreFunctionTests
__________

Note: In the case of multiple test runs, this post will be edited.

[edkerk]

Looks good!

README.md content is not showing correctly in the develop home page, but this is a known bug.