• migrate from packages.config to PackageReference
  • migrate build and deploy from gulp (JavaScript based) to Cake (C# based)
  • upgrade to .Net Framework 4.7.2 and AspNet.MVC 5.2.4
  • upgrade to Glass.Mapper.Sc.91
  • upgrade to Unicorn 4.0.7
  • upgrade Sitecore References via Nuget from Sitecore XP 9.0.2 to Sitecore XP 9.1.0 ones
  • speed up the Sitecore 9 instance after a build on your machine
  • migrate the project templates from packages.config to PackageReference