• @dadah89 adds --output_binlog_position to optionally output the
  position with the row
• @dadah89 adds --output_commit_info to turn off xid/commit fields
• maxwell now supports tables with partitions
• maxwell now supports N maxwells per-server. see the client_id /
  replica_server_id options.
• two parser fixes, for engine=innodb and CHARSET ASCII
• lay the ground work for doing master recovery; we add a heartbeat into
  the positions table that we can co-ordinate around.