[Issue 12293] forward should be moved to std.functional

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12293

--- Comment #1 from Kenji Hara <k.hara.pg at gmail.com> ---
(In reply to Gary Willoughby from comment #0)
> std.algorithm.forward is missing from the index at the top of
> http://dlang.org/phobos/std_algorithm.html

If the issue is the un-listing of 'forward' function, why it should go
std.functional module? You should explain the reason.

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