List Utils
List Utils

- Migrated list utilities listDiff and listIntersect over from taskwarrior.

whitel/task-server,whitel/task-server,whitel/task-server,goldenHairDafo/taskd,goldenHairDafo/taskd,whitel/task-server,goldenHairDafo/taskd,whitel/task-server,goldenHairDafo/taskd,goldenHairDafo/taskd