[BUG] Readme examples outdated

[radiophysicist]

Is there an existing issue for this?

• I have searched the existing issues

Does this issue exist in the latest version?

• I'm using the latest release

Describe the bug?

In readme.md usage examples containing

from model_clone import CloneModel

are outdated and should use CloneMixin class

To Reproduce

Code from readme examples is not working with the latest version

What OS are you seeing the problem on?

all

Expected behavior?

Code examples should work as expected

Relevant log output

No response

Anything else?

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

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