cedric
04/07/2017, 2:00 PMmap/filter/whatever composition we use today. It feels like a special case that invalidates composition (referring to the feature survey at https://docs.google.com/forms/d/e/1FAIpQLSdnCgBonEV5pwN8L903BzdYb9Baf0dpwsJ5YrKnxLveiLFkEQ/viewform )