core (memory/mapping): add `origin_id` column to History + constraints update: - `origin_id` is added as a column instead of being just in extra, as it an important data to filter on. - Add some constraints. - Add `serialise` method to Message and Subject.

syntax: glob
*.pyc
*.pyv
*.swp
*.swo
tags
twistd.log
twistd.pid
bridge_constructor/generated
tests/e2e/report*
_trial_temp/
sat.egg-info
*.un~
dist
MANIFEST
build
ctags_links/
Session.vim
.build
.pytest_cache