fixes #21 - self.root was not being correctly updated, so the list never rotated out entries!
fixes #21 - self.root was not being correctly updated, so the list never rotated out entries!

this has a very simple test to demonstrate the issue is closed.  more tests are needed.

mgaitan/boltons,suranap/boltons,markrwilliams/boltons,neuropil/boltons,siemens/boltons,zeroSteiner/boltons,doublereedkurt/boltons,kevinastone/boltons