bug with event_order_function

[behinger]

the bug I have seen in @vladdez notebook with the event_order_function appeared again. I have to test and drill it down further, but it appeared now with a sequence+repetition design model. Unclear if without these it would appear too

without shuffle:

with shuffle:

clearly the conditions are not separated correctly.

[behinger]

ah I feel stupid now. I forgot to add the random seed - thus every shuffle within the toolbox (we call generate_events severla time) was different... with a fixed random seed it works. Exactly as written in the docstring -.-