Twitter Util v21.12.0 Release Notes
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💥 Breaking API Changes
* util-core: `Activity.collect*` and `Var.collect*` are now implemented in terms of known collection type `scala.collection.Seq` versus HKT `CC[X]` before. This allows for certain performance enhancements as well as makes it more aligned with the `Future.collect` APIs. ``PHAB_ID=D795123``