Speed up the evaluation tool

[myroslavarm]

Based on preliminary results, the evaluation tool will most likely need to be sped up either preceding or following the implementation of #23.

One idea could be to write the generated sequences that are "recreating" the process of coding to file, as it takes a long time to prepare them, and then just fetch them when evaluating. However, we'll need to check whether this is indeed the most time-consuming part of the implementation.