code: Вывод границ корзин

unittest.vcxproj

@@ -133,6 +133,7 @@
   <ItemGroup>
     <ClInclude Include="doctest.h" />
     <ClInclude Include="histogram_internal.h" />
+    <ClInclude Include="range_border.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">