Adding --gitignore=true as an additional_cargo_arg

[benalleng]

Are you able to add the --gitignore=true flag back into the mutants config through the additional_cargo_args key? It certainly doesn't work like I would expect it to, Is there another place where this flag should be going instead to revert to the old default behavior before 25.1.0?

[sourcefrog]

I didn't add it to the config, but I should. For now you just have to give it on the command line: cargo mutants --gitignore=true.

[benalleng]

Nice adding gitignore = true in the mutants.toml now handles this as of v25.2.0