Update BWL to latest SPNL changes
Merge branch 'manu-feeder-data' into manu-rebuild-state

Conflicts:
	bwl-core/src/main/scala/com/wajam/bwl/queue/log/LogQueueFeeder.scala
	bwl-core/src/main/scala/com/wajam/bwl/queue/memory/MemoryQueue.scala