nanoFramework.Json Library v2.2.122

What's Changed

• Update 1 NuGet dependencies by @nfbot in #325
• Update 1 NuGet dependencies by @nfbot in #326
• Update 1 NuGet dependencies by @nfbot in #327
• Handle negative time span by @CoryCharlton in #328

Full Changelog: v2.2.117...v2.2.122