CCH and multiple aux column aggregation

[FlxPo]

Hi @vlarmet,

FYI I just created a fork of cppRouting for the needs of our mobility project. It adds CCH and multi aux value aggregation (as mentionned here: #23), which helps performance wise when computing time/distance costs and doing traffic assignment (to avoid multiple recontractions).

The code was mainly written by codex, so I thought I would not do a giant AI PR before mentioning this to you. If you are interested we could of course integrate the changes in cppRouting.

[vlarmet]

Hi
Thank you for your contribution. I will soon review your changes and create a PR to include these features. You will be mentioned as cppRouting contributor. Tell me if i should mention other people who worked on CCH implementation