todo.merge
Merge imported todos into a list by id: an imported todo replaces the one with its id, new ids are appended.
merge_todos in RustTagged import
2 capabilities
todo.import-csv
Read todos from a CSV file (RFC 4180) as todo.export-csv writes it, checking every row, with row-numbered errors.
A group of 2:
import_csv, validate_todo_csv