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.

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

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

Mesh Colouring
MeshDataContainer

integer_sequence
Refactor of methods

class UnstructuredMesh has no specializations now

different types to mesh elements is also done.

correct.

I realized, that it would be better to implement methods working with mesh elements in the class UnstructuredMesh.
Finally, I managed to implement concept of unstructured mesh in any dimension.
Further work will be done after consultations.

Now the intent is clear and only few things like center points are to be implemented.
Then create wrappers for cells, faces etc.
Also is necessary to create methods for calculating lebesgue meassure.