Clone this repo:
  1. 08508d4 Allow 2.12.0 dev SDK versions (#141) by Nate Bosch · 3 days ago master 2.5.0-nullsafety.2
  2. 6d2de25 Invalidate async cache on exception (#132) by Bencze Balázs · 4 days ago
  3. 38ace5f Avoid a `late final` field without initializer (#139) by Nate Bosch · 4 weeks ago
  4. 50e01d2 Prepare for the 2.11 dev SDKs (#138) by Nate Bosch · 5 weeks ago 2.5.0-nullsafety.1
  5. 3fedad2 Remove references to the deprecated CastError. (#118) by Lasse R.H. Nielsen · 5 weeks ago

Contains utility classes in the style of dart:async to work with asynchronous computations.