Initialize Component from Component

Problem

Currently, a component can't use information from another component for initialization. This is caused by the fact that all components need to connect() (i.e. push initial outputs) in the same initialization phase.

Possible solution

Iterative connect: The connect() method should be able to fail (return false use ComponentStatus) in the case that some required input can't be pulled. The algorithm could look like this:

while True:
    any_connect = False
    any_unconnected = False
    for mod in modules:
        if mod.state != CONNECTED:
            if mod.connect():
                any_connect = True
            else:
                any_unconnected  = True
    if not any_connect:
        raise FinamConnectError("Circular dependency in component initialization. Unconnected components... [list here]")
    if not any_unconnected:
        break // Done!