Diff old notes and read-kinds notes

[onbreath]

Depends on this as local root branch.

This can be used to test the old read+eval implementation for notes against the read-kinds implementation.
scicloj.clay.v2.notebook/spec-notes contains calls to exemplify scicloj.clay.v2.util.diff/notes, which takes a number of options to print diffs to the REPL and/or files.

For now even notebooks.demo has considerable differences due to whitespace handling.

[onbreath]

Oh and you can just use clay as usual to diff.

In Emacs I can colorize the diff files with (ansi-color-apply-on-region (point-min) (point-max)) or

; Source - https://stackoverflow.com/questions/23378271/how-do-i-display-ansi-color-codes-in-emacs-for-any-mode
; Posted by juanleon, modified by community. See post 'Timeline' for change history
; Retrieved 2025-11-27, License - CC BY-SA 3.0

(require 'ansi-color)
(defun display-ansi-colors ()
  (interactive)
  (ansi-color-apply-on-region (point-min) (point-max)))

[onbreath]

Depends on this as local root branch