v0.11.6

What's Changed

• feat(locks): lease-based distributed lock (#342 #2) by @HYChou0515 in #343
• feat(queue): partition_key + idempotency_key (#342 #3/#4) by @HYChou0515 in #344
• feat(cas): optimistic concurrency end-to-end (#342 #1) by @HYChou0515 in #345

Full Changelog: v0.11.5...v0.11.6