Make the Generator trait well-known #723
Merged
+134
−2
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r? @jackh726 There's quite a lot of cargo culting of code from function trait support which I don't fully understand, so I'd appreciate a close review.
As discussed on Zulip, this adds initial support for the Generator trait as a well-known trait. I'll work on
DispatchFromDyn
next, but want to check I'm doing the right things first.