Mocker.copy: Use correct type when copying mocker

[allanlewis]

As per the sole commit:

Currently, the copy method hard-codes the Mocker class as the return type. In order to allow this to work with sub-classes of Mocker, this commit replaces it with the type of the instance.

[allanlewis]

@jamielennox Do you have any comments on this change?

[jamielennox]

Only that I swear I had dealt with this one a few weeks ago.

Very sorry it took so long.

I'll admit I find it weird that you'd want to subclass this object. Can you give an example of why?

Even given this there's no reason to not use the real class type.

[allanlewis]

I'll admit I find it weird that you'd want to subclass this object. Can you give an example of why?

I subclassed requests_mock.Mocker to make a specialised MessageMocker to mock responses to inter-service messages in my microservice app. This issue caught me out because copies were Mockers instead of MessageMockers.

Thanks for merging this 🙏

[allanlewis]

@jamielennox Do you have any plans to make a new release? I'd very much like this feature, although obviously I can use a Git version for the time being. (I'm not sure what else has changed since v1.8.0.)

[jamielennox]

@allanlewis i've merged one or two other PRs, i'm trying to finish off #162 and get github-actions to do the version publish. So should be this week.

[jamielennox]

Released as 1.9.0

Thanks for the help.