CMA variants by Risto

[teytaud]

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Motivation and Context / Related issue

I am motivated because these variants are so COOOOL.

How Has This Been Tested (if it applies)

Checklist

• The documentation is up-to-date with the changes I made.
• I have read the CONTRIBUTING document and completed the CLA (see CLA).
• All tests passed, and additional code has been covered with new tests.

[MLopez-Ibanez]

Hi @teytaud, was this ever merged in some form? If it is merged, it would be nice to mention the PPSN paper somewhere. I would like to mention this work in a future talk.