fix PriorityScheduler bug
add specs2 and offsetmanager test
Merge branch 'at_least_once' into add_test
change specs2 version
add offsetManagerSpec
Merge remote-tracking branch 'remotes/origin/at_least_once' into add_test
Merge remote-tracking branch 'upstream/master'
close thread and change no message log to debug level
reallocate resource if executor launch rejected
KafkaCheckpointManager uses the low level Kafka consumer and consumes only once
Merge pull request #93 from huafengw/error_recovery

Error recovery
add restart application
Merge remote branch 'upstream/master' into add_test
Merge remote branch 'origin/at_least_once' into add_test
make specs2 work
rename to ReplayAppFromLatestTimestamp
rename to ReplayFromTimestampWindowTrailingEdge
Merge pull request #94 from huafengw/master

add restart application
transaction interface refactor
Merge branch 'add_test' of https://github.com/manuzhang/gearpump into add_test