Revert "Using `std::list` for co-face map"
Revert "Using `std::list` for co-face map"

This reverts commit a9c87bc4a2b3da9993e1cb219aca6095a4687dbf.

The `std::list` was a bad idea because it slightly increases memory
overhead for large data sets.

Submanifold/Aleph,Submanifold/Aleph,Submanifold/Aleph