make the culling re-usable by many types
make the culling re-usable by many types

This allows gap-syncing entries and treatments with similar ease.

openaps/oref0,openaps/oref0,PieterGit/oref0,PieterGit/oref0,PieterGit/oref0,openaps/oref0,openaps/oref0,PieterGit/oref0