v0.4.15

What's Changed

• Add MongoDB sharding document by @sejongk in #781
• Update Design Document for Missing Document Link and Instructon by @krapie in #782
• Add merge and split concurrency tests by @justiceHui in #780
• Add Test Server Wait Helper Function by @krapie in #787
• Prevent RunTestConcurrency from creating garbage clients by @justiceHui in #793
• Add Swagger Serving Command by @devleejb in #812

Full Changelog: v0.4.14...v0.4.15