[Issue 14183] Updates to groupBy

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14183

--- Comment #6 from github-bugzilla at puremagic.com ---
Commits pushed to stable at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/c6520969eaa317d373bc288aec49e9e2ca077dc4
Fix Issue 14183 - Changes to groupBy

https://github.com/D-Programming-Language/phobos/commit/fa297af0e69f5b097fad81263da74d2033fd2541
Merge pull request #3005 from Poita/Issue14183

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