Order execution time of tokens so sequences can work correctly

[zimmski]

$Literal = type: Sequence

And = $Literal.Next<x> " " ${Literal.Existing not in (x)} " " ${Literal.Existing not in (x)} "\n"

START = $Literal.Reset And And

This example is broken with e.g. the random fuzzing strategy. In a future version this should lead to an execution of .Reset then the two .Next and then the four .Existing even though the token definitions define a different order. Simply put: .Existing should be executed after the whole token graph is processed.