[boost] [Modularization] Levels classification

Hi, could we add a page listing the modules by levels following this rule * A module is in Level 0 if it doesn't depends on other modules * A module is in Level 1 if it depends only on modules at level 0 * A module is in Level N+1 if it depends only on modules at level N or lower levels We have now the following modules that satisfy the rule Moduler levels Level 0 : Config Predef Preprocessor Level 1 : Assert Static Assert Level 2 : Core Level 3 : Utility (After moving string_ref out (???), moving iterator to Core and generator_iterator to Iterator Peter, could you update the Dependency report? Could your report assign a level following this rule and show the modules with an assigned level? Best, Vicente