Refactor DAE to allow range-based computations

Signed-off-by: Christoph Höger <christoph.hoeger@tu-berlin.de>
(Re-)Implement causalised event search

Signed-off-by: Christoph Höger <christoph.hoeger@tu-berlin.de>
Implement apache commons event handlers

We have to install one handler per event, *sigh*

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