[Issue 24704] DateTime.fromISOExtString Does Not Support ISO8601 Time Unit Fractions

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24704

--- Comment #5 from Carsten Schlote <carsten.schlote at gmx.net> ---
Good point. So I move my changes to SysTime, if this is the better place for
it.

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