python.errors: new semantics for unsteal-ref
python: correction of reference counting logic and addition of None bindings
python.modules: vocab hierarchy for standard library modules

pre-existing bindings for various python modules can be placed here so
that they dont have to be redeclared for everyone using them
python.tests: more destructors & refcounting tests
python.syntax: new way to bind python functions to factor words and updated tests

this way avoids binding literal alien values inside the words which is
just wrong. the hardcoded alien addresses goes "out of sync" when
factor is restarded and causes crashes.
python: Fix >py stack effect for docs.
parser: Consider private words now for autocompletes, but to avoid pulling in private words unexpectedly, throw a restart that confirms you really want the private word. Fixes #1174.
parser: Cleaner fix, comments. Fixes #1174.
core/basis: Trim or reorganize a few using lists. Playing around with auto-use restarts and private words.