Set of commits to be tagged v0.7

[francoislaurent]

Changelog

• support for python 3.14.
• support for python 3.8 dropped.
• the webui installation target is dropped.
• the scripts/tramway-browse script is removed.
• compatibility bugfixes in bayes_factor and gwr.
• the multiprocessing standard library is replaced by multiprocess to fix the analyzer-based notebooks.
• the deported execution of an analyzer-based notebook supports whitespaces at the beginning of the .run() statement.
• the worker_count attribute can be a float between 0 and 1 to select a number of threads as a proportion of the available threads.
• the extended test procedure involves running a new script on Maestro (containers/test-maestro.sh).
• new containers.