fix: always save last position before jump

[phanen]

Checklist

• Used only camelCase variable names.
• If functionality is added or modified, also made respective changes to the
  README.md (the .txt file is auto-generated and does not need to be modified).
• Used conventional commits keywords.

[chrisgrieser]

Thanks for the PR.

I am wondering, is there a reason to not just always save the previous position in the jump list? Because I can see just adding this behavior without a setting.

[phanen]

To be consist with the default behavior of vim's builtin textobjects, I also think it's more reasonable to always save the position.

[chrisgrieser]

All right. One Last thing, could you add a comment for the purpose of the m`? It might be a bit looking at it later on otherwise

[phanen]

Added.

[chrisgrieser]

Thank you, and thanks very much for the PR itself!