Draft: Remove __all__ from standard modules
Related to !5993 (merged)
It's not very convenient to maintain at the same time public functions and __all__
Part of this PR reworks the standard
modules to use the default import behavior, and instead flag as private everything else.
It's maybe a bit too much of rework for now, so a prefer to split it from !5993 (merged)
Edited by Valentin Valls