Add === -> #kind_of? mutation

[dgollahon]

See mbj/mutant#689

[backus]

You can just add === to the right side of the - above

[dgollahon]

Ah yeah, I guess that makes sense.

[dgollahon]

I wonder if we should also directly emit a mutation to instance_of? instead of waiting for it to happen via a second mutest run. See mbj/mutant#431 for some discussion on the general topic.

Pro: less effort for user if there is an alive.
Con: We generate more mutations than necessary (and I think the case where an instance_of? alive is probably rare v.s. === operators being relatively common).

Thoughts?

[backus]

I wonder if we should also directly emit a mutation to instance_of? instead of waiting for it to happen via a second mutest run. See mbj/mutant#431 for some discussion on the general topic.

From discussion in slack, I like these sorts of optimizations but I think we need to wait until we can implement more sophisticated probing

[backus]

Nice