fixed bug where replicationinterval json config value got overwritten by the default flag when no flag is specified (should flags or config.json take priority when both are set?)
Added support for configurable replication url in the state file generated during import (openplanet was hardcoded)
Added support for configurable replication interval in the state file generated during import (minute interval was hardcoded)
Added support for sequence number diffing in the state file generated during import based off the replication interval (was hardcoded to 1 minute)
These changes the output of region specific imports from alternative data sources like geofabrik.de to be compatible with tools like osmosis and osmupdate which generate changes files which can then be used with the imposm3 diff command
Documented with issue #163