v2.1.5-fleet

Fix a bug with dequeueing items until the queue is empty causing the next added item to be lost.

What's Changed

• Fix Peek to not put the head past the tail by @Psykar in #2

Full Changelog: v2.1.4-fleet...v2.1.5-fleet

v2.1.4-fleet: Merge pull request #1 from Psykar/fix-recursive-rlock

Fix recursive rlock