v6.1.0

What's Changed

• Remove AutofacWebApiDependencyScope from HttpRequestMessage after we leave the handler so it can be garbage collected (thanks @srogovtsev! #17)
• Update base Autofac dependencies so fixes and features are present by default:
  • Autofac 6.4.0
  • Autofac.Owin 7.0.0
  • Autofac.WebApi2 6.1.1

Full Changelog: v6.0.0...v6.1.0