the elements.

orderedConnections...

was necessary to keep 3 arguments in writer (dimension, index type, real
type).

Resize valarrays while the number of colours exceeds the allocated
reserve.

supported cell types.

it to be able to exprort unsuported cell types.

and stored type.

detection whether an edge is left or right to the face or cell

- consolelogger.h to only detect whether begin member function exists
- refactor of coordinates from pointer to std::array

whether the varible is iterable and then writes the content of the
container.

MeshDataContainer implicit constructor added

inline_array_operations.h -> reorder of operations

Mesh Colouring
MeshDataContainer

Setup of boundary cells
Cells distace over face