Re: [boost] Dependency report

New and improved reports here: https://pdimov.github.io/boostdep-report/

Yes please, let's move next_prior.hpp to Iterator while we're on this topic. This dependency is not the end of the world by any means, but it would still be a small step in the right direction.

utility -> iterator is the cause of a bunch of modules forming a tight group at level 5: https://pdimov.github.io/boostdep-report/develop/module-levels.html#level:5 which consequently makes all of them have 25 dependencies each: https://pdimov.github.io/boostdep-report/develop/module-weights.html#weight:...