QCOMPARE: improve diagnostic output for list mismatches

    QStringList a{ u"Hello"_s, u"World"_s };
    QStringList b{ u"Helo"_s, u"Wrld"_s };
    QCOMPARE(a, b);

#include <catch2/catch_test_macros.hpp>
#include <catch2/catch_session.hpp>

#include <vector>

int main( int argc, char* argv[] ) {
  int result = Catch::Session().run( argc, argv );
  return result;
}
TEST_CASE( "myTest" )
{
    std::vector a{1, 2}, b{2, 3};
    CHECK(a == b);
}

/app/example.cpp:13: FAILED:
  CHECK( a == b )
with expansion:
  { 1, 2 } == { 2, 3 }