Test and fix "pickleability" of Binary objects
which has been recently broken while some cubes rely on this (eg fastimport).
Do some licensing/pep8 cleanup along the way.
Closes #13385274
include *.pyinclude */*.pyrecursive-include data *.gif *.png *.ico *.css *.jsrecursive-include i18n *.porecursive-include wdoc *