Disable mutators

Since we now have a wide range of mutators available there are cases that some mutators are not wanted on certain projects. For example: a project with a lot of trace logging like:

Log.Trace("Usercontroller called");

I could want to disable the string mutator.

{
    "stryker-config":
    {
        "excluded-mutations": [
            "StringMutator",
            "CheckedMutator",
         ],
    }
}

Users should be able to pass a list of mutators to disable. This can be a tricky thing since the names of the mutators are not mapped 1:1 in the documentation. For example the string mutator is documented as one mutator, but in code there are 2 instances. We could introduce mutator categories/groups for this?

[richardwerkman]

@nicojs I’ve changed the name to excluded-mutations. To keep the dash cased format we use in our other names.

[rouke-broersma]

Agreed