nanoFramework.System.Net.Http Library v1.5.177

Updated dependencies

• Update 1 NuGet dependencies by @nfbot in #457
• Update 2 NuGet dependencies by @nfbot in #458

Full Changelog: v1.5.175...v1.5.177

The following NuGet packages are available from this release:

📦 nanoFramework.System.Net.Http
📦 nanoFramework.System.Net.Http.Client
📦 nanoFramework.System.Net.Http.Server