CompatHelper: bump compat for MLJFlux to 0.4, (keep existing compat)
Created by: github-actions[bot]
This pull request changes the compat entry for the MLJFlux
package from 0.2.10, 0.3
to 0.2.10, 0.3, 0.4
.
This keeps the compat entries for earlier versions.
Note: I have not tested your package with this new compat entry. It is your responsibility to make sure that your package tests pass before you merge this pull request.