Make chains of components without time easier
With time passed around in Info objects, components without time can get connect time from upstream or downstream components.
See !111 (merged).
For connecting multiple components without time, it is not known from which side time will become available. Checking for both sides, and informing the other on on retrieving a time does not work. Infos for both sides would have to be given to be able to get the time. But then, it is not possible to give a new info to the "other side".
An option would be to let comps without time know from which side time will come. Connect code in those comps would become relatively complicated, but ok...
Time propagation direction/side could be given by the user who knows on which end a time component is.
Theoretically, the scheduler could also determine that before connect. However, it is unclear how to let the component know it then.
Another complication could be that grid etc. info AND time need to come from the same direction then. At least for one input. Fake/pure meta connections could help here.