[Issue 23527] More detailed error messages from is(...) and _traits(compiles)

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23527

Iain Buclaw <ibuclaw at gdcproject.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P1                          |P4

--