Allow multiple insertions in matrix

Just in case...

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

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

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

Signed-off-by: Christoph Höger <christoph.hoeger@tu-berlin.de>
Fix regression introduced in f309de6d89e91cec99b912e6f0a8c231cb09b675

I should not commit just before vacation ...

Signed-off-by: Christoph Höger <christoph.hoeger@tu-berlin.de>
Use at() method to catch out-of-bounds

Signed-off-by: Christoph Höger <christoph.hoeger@tu-berlin.de>
Fix ordering bugs in inflation/sealing

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