Using @juliangruber solution for keys.
Using a combination of Date.now and process.hrtime() for keys.
Stabilized the concurrent shifting and publishing.
Fixed a this into that.
Added shiftAll to README.
Added a shiftAll method.
Bumped version v0.2.1.
Actually removed the dependency on sublevel, previous one was broken.
Pride is an evil beast.
Removed sublevel depedency.
Renamed to level-queue-type.
Added travis support.
Fixed travis logo
Added missing fields in package.json.
Added JSON support.
Handling concurrent shifting and pushing.
Attached the shifts to the Stream.
Allow two concurrent element to be shifted from the queue.
Basic version of level-queue.