Sleeping the night away

Okay, I am afraid to jinx this but Will has been sleeping through the night for the past few days. And I mean he goes to bed around 8:15, falls asleep on his own by 8:45 and sleeps until around 5:15 am! I actually woke up this morning before he did and was just waiting to hear him cry so I could feed him. We are not sure if it is because we have been swaddling him but I would like to think it is because he is actually sleeping through the night (I dare say again!) We are pretty darn lucky and I only hope this continues...