* Add new renderer setting `add_root_updir` to fix#1743.
* Fix default value in docs.
* Remove proposed “add_root_updir” and rename “root_folder_modifier” to “root_folder_label”. Also, “root_folder_label” can be also a function now.
* chore: warn users about breaking change
* fix(#1743): use silent migration of root_folder_modifier
* fix(#1743): add example, document previous renderer.root_folder_modifier
* Add check to validate return type of “root_folder_label” is string.
* Change “root_folder_label” default value to “:~:s?$?/..?”.
* Add missing keyword “local” to local variable “label”.
Co-authored-by: David Aguilera <david.aguilera@neliosoftware.com>
Co-authored-by: gegoune <dev@clog.rocks>
Co-authored-by: Alexander Courtis <alex@courtis.org>
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