KeyError when ILP remains unsolved

[Old-Shatterhand]

Describe the bug When a problem is not feasible (or no solution has been found in the time-limit), DataSAIL raises an KeyError downstream around routine.py line 84.

To Reproduce To done in a pytest

Expected behavior Report a warning for that case and remove the unsolved technique from the list of to-be-computed techniques to avoid KeyErrors.

Environment (please complete the following information):

• OS: Any
• DataSAIL Version: Any
• Python Version: Any

Additional context None

[Old-Shatterhand]

This issue was addressed in push a98893b. It will be released with the next version.