ValueError gives mis-leading error message if catching a non-related ValueError

[LinuxIsCool]

https://github.com/cadCAD-org/cadCAD/blob/7feecf85efcbfbcb40649e87cd0a8be1ac773a15/cadCAD/engine/execution.py#L147

My policy function was raising ValueError due to a mis-use of a numpy function which was raising a ValueError. The "\'sim_configs\' N must > 0" message was thus very confusing.

Suggestion: cadCAD should define it's own exceptions and raise them explicitly before having a final generic exception for cases like this. Cheers :cactus:

[JEJodesty]

@LinuxIsCool Thanks :) Will move sim_configs exception including this ValueError execution to the correct place

[JEJodesty]

Updated Build with solution in staging branch https://github.com/cadCAD-org/cadCAD/tree/staging

[JEJodesty]

Resolved by ver 0.4.27