Connnection from an element in an Array initializer

[andrewdavidmackenzie]

Be able to have an initializer on a sub-flow that is an Array input, and then within the sub-flow connect from individual elements in that array.

Will require sub-routes on initializers, treating them more like input.

[andrewdavidmackenzie]

This might work now with some recent changes.
Write a test/example that uses it.