global stop condition

[GertjanBisschop]

Initial draft for changes discussed in #2158 to enable simulating beyond local roots.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (804e036) 98.70% compared to head (df0f20d) 91.52%.

Additional details and impacted files

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