[Issue 15642] std.utf.encode should return ubyte

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15642

--- Comment #1 from Steven Schveighoffer <schveiguy at yahoo.com> ---
There was an attempt to fix this, but it died in committee.

https://github.com/dlang/phobos/pull/5077

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