finish replication test
set deps on immediate precessor in same instance space.
fix race cond in propose and add propose number
Merge pull request #37 from fengjingchao/inst

finish replication test
add checkpoint cycle and finish conflict replica test
Merge pull request #38 from fengjingchao/inst

add checkpoint cycle
style(replica.go, dummyTR.go)
Merge pull request #40 from yifan-gu/dev

style(replica.go, dummyTR.go)
finish tarjan scc
test(instance_test.go) add test for handlePropose and handlePreAccept
Merge pull request #42 from yifan-gu/unitest

More testing on instance state machine
Merge branch 'master' of github.com:go-distributed/epaxos into inst

Conflicts:
	replica/replica.go
(livetest) add test_plan.md
execution fix: transaction entire components
test(instance_test.go) finish testing handlePreAccept and handleAccept
test(instance_test.go) change instance.rowId = instance.replica.Id+1, in some cases
test(instance_test.go) add unitest for handlePreAcceptOk and handlePreAcceptReply
doc(instance.go) modified a comment
test(instance_test.go) cover more path in TestHandlePrepare and TestHandleCommit
test(instance_test.go) add TestHandlePrepareReply to cover handlePrepareReply