vim had an undo tree for 10 years (or longer?) [0] and there are plugins (eg [1]) that make it very easy to go back in history and also to explore different branches of your undo/edit history. Dura will not track changes that are not saved to disk IIUC

[0]: https://vimhelp.org/undo.txt.html#undo-tree [1]: https://github.com/mbbill/undotree