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Replace method not compatible with SubClasses #426

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@dannystaple

Description

@dannystaple

Situation

Using the demonstration subclass from https://python-semver.readthedocs.io/en/latest/advanced/create-subclasses-from-version.html#creating-subclasses-from-version, the bump methods will create a new instance of the same SubClass.

When using the replace method, an instance of the Version class is created and not the subclass.

To Reproduce

  1. Create a subclass as shown in the document above.
  2. version = SemVerWithVPrefix.parse("v1.1.0")
  3. dev_version = version.replace(prerelease="dev.0")
  4. Print str(dev_version)
  5. This results in 1.1.0-dev.0 - dev_version is of type Version not SemVerWithVPrefix.

Expected Behavior

I expect v1.1.0-dev.0 and dev_version to be an instance of SemVerWithVPrefix (or my class).

Environment

  • OS: [e.g. Linux, MacOS, Windows, ...] - Python 3.11 container - will be Debian.
  • Python version [e.g. 3.6, 3.7, ...] - Python 3.11.5
  • Version of semver library [e.g. 3.0.0] - semver==3.0.1

Additional context

I suggest changing this the same way that the bump methods work:
Add this near the top: cls = type(self)
And near the bottom, replace return Version(**version) with return cls(**version).

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