## Add a new entry to the illumination settings, merging entries as
# necessary.
def onAdd(start, stop):
    # Go through our list of sequences and see if we need to merge them
    # together.
    sequence.append([start, stop])
    indexToDelete = len(sequence) - 1
    didChange = True
    while didChange:
        print sequence, indexToDelete
        didChange = False
        for i, (altStart, altStop) in enumerate(sequence):
            # Check for overlap.
            if ((start < altStart and stop > altStart) or
                    (stop > altStop and start < altStop)):
                # Merge the two entries.
                start = min(start, altStart)
                stop = max(stop, altStop)
                sequence[i] = [start, stop]
                didChange = True
                if indexToDelete is not None:
                    # Destroy the old sequence as it's been merged with
                    # this one.
                    del sequence[indexToDelete]
                indexToDelete = i
                break