Clojurians Log v2

My big concern is the small change in behavior related to when the query execution code throws an exception. The sync code resolves the exception from the promise and re-throws it. lacinia-pedestal will need a change to do something similar, as might your code.

Might be interesting to see what it does to performance. Of there is a lacinia-pedestal with the changes I could put it through a subscription performance test?