[Issue 22612] std.json doesn't parse duplicate keys

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22612

Basile-z <b2.temp at gmx.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|x86                         |All
                 OS|Windows                     |All
           Severity|enhancement                 |normal

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