Fix reorder warning

Signed-off-by: Christoph Höger <christoph.hoeger@tu-berlin.de>
Add input builder by coordinate matrix

This should speed up large matrix constructions.

Signed-off-by: Christoph Höger <christoph.hoeger@tu-berlin.de>
Improved builder performance

Signed-off-by: Christoph Höger <christoph.hoeger@tu-berlin.de>