Add performers field to songs

[pinoaffe]

No description provided.

[DamienCassou]

Thank you for decomposing your PR. Can you please have a look at my feedback? Is there anything to update in the README?

[pinoaffe]

and as to the readme: This does not introduce any new data types, and since many of the fields of libmpdel-song are not listed I don't think it makes sense to list the performers field

[DamienCassou]

This looks good to me. Can we add a unit test or two?

As for #17, please sign your commits if you can.

[DamienCassou]

Excellent. Do you plan to sign your commits or should I move forward without?

[pinoaffe]

I plan to sign them, just have to figure out how to set that up

[DamienCassou]

I plan to sign them, just have to figure out how to set that up

you may want to read this: https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits

[pinoaffe]

Thanks for the link, I signed the commits

[DamienCassou]

Excellent! Thank you