About --gui=console with Python 3.13

[Edward K. Ream]

#4155 is a memo that the windows-curses packages does not work with Python 3.13.

Repeated attempts at creating a conditional requirement for this package in pyproject.toml have failed. As a workaround, I have removed the windows-curses package from both pyproject.toml and requirements.txt.

As a result, Leo 6.8.3 will never install the windows-curses package. Those wishing to use --gui=console should do the following:

- Continue to use Python 3.12 through Python 3.9.

- Install window-curses by hand with `pip install windows-curses`.

Any questions or comments?

Edward