[Biopython] Deprecate (or remove?) Scripts/xbbtools/xbb_*.py

[Peter Cock]

Hello all,

Is anyone using the GUI tool under Biopython's Scripts/xbbtools/
folder?

It was written using a library called Pmw (Python megawidgets),
but sadly it hasn't had anyone keeping it properly up to date since
Thomas Sicheritz Pontén first wrote it back in 2001.

Sadly unless someone volunteers to take over maintaining this,
I propose to deprecate it - or even simply remove it - in the next
release of Biopython.

Please reply here, or comment on GitHub here:
https://github.com/biopython/biopython/issues/848

Thank you,

Peter