Todo's

unittest for

customOperators added from outside
multiple assessmentResults
throwing errors

performance

optimize for batch processing:
- setup all expressions before processing, now the responseProcessing is processed line by line for each item this can be done at forehand. This might be a bit slower for processing single results.
- Process in parallell
Unittest performance

v3 Result Reporting

QTI v3 Results Reporting Specification

full-support

Support all expressions.