CT monitors the DB cert/key and updates when it receives new ones.  Will eventually make the CT key and root certs update automatically eventually as well.  It's not really required for now since AppBattery will restart a CT instance once a day anyway.  At which time the new certs would get picked up.
Improved performance of leaves retrieval and initialization of sql database.  Major change was the grouping of all leaf insertions into a single transaction, instead of one transaction per leaf.  This reduced run time by about 100x.  However, for 9000 certs, it still takes about 19s to retrieve data from 4 keys in DB.  sqlite db initialization is now only 1-2s.