Merge pull request cpp-best-practices#78 from dk949/main

Enforce the use of `override`

cmake/CompilerWarnings.cmake

@@ -67,6 +67,7 @@ function(
         -Wduplicated-branches # warn if if / else branches have duplicated code
         -Wlogical-op # warn about logical operations being used where bitwise were probably wanted
         -Wuseless-cast # warn if you perform a cast to the same type
+        -Wsuggest-override # warn if an overridden member function is not marked 'override' or 'final'
     )
   endif()