replicated index can drop values (if a leader sends more rectent data, and they don't match with local data)
WIP cleaning up log replication
moved away from -1 as "initial index"
fixing replicated index `lastIndex`
fixed infoMembers when no leader available yet
entries are batched from index, including i-th
cleanup and applying commands once they're replicated > 1/2 cluster
fighting dispatchers
fixed comitting