gbracha@google.com ae83a06400 Assorted fixes to async: yield may suspend in async* methods; yield* skips emptysequences; definition of flatten. ... R=hausner@google.com, paulberry@google.com Review URL: https://codereview.chromium.org//1010433002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@44569 260f80e4-7a28-3924-810f-c04153c831b5		2015-03-18 23:18:06 +00:00
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language	Assorted fixes to async: yield may suspend in async* methods; yield* skips emptysequences; definition of flatten.	2015-03-18 23:18:06 +00:00