FIX: remove duplicates from __all__
Better logging when Host of Controller changes
Return (value, timestamp) duple from get_state_reg()

TODO: merge with 05a6339abc105511b9794134cfe2d416593e7eab
Add /v1/controllers for controller data lookup
FIX: Import SDP

TODO: merge to 3a3aa70241ef6cac52ebc85d4c9e5865f8c7af60