message: Added Attribute Changes to Log
diff: * Add test discovery and NoBuild option to test requests (PR: [omnisharp-roslyn/#1719](https://github.com/OmniSharp/omnisharp-roslyn/pull/1719))
  * Updated Razor support
  * Enable Semantic Highlighting for Razor TagHelpers and Blazor components ([aspnetcore#21713](https://github.com/dotnet/aspnetcore/issues/21713))
  + * Directive and TagHelper Attribute Completions are now committed contextually with `=`, `:` and ` ` commit characters. ([aspnetcore#21485](https://github.com/dotnet/aspnetcore/issues/21485))
  + * Removed TagHelper attribute completion snippet support as we felt the typing experience was superior without it.
  * Add support for Blazor WebAssembly-specific debug adapter ([dotnet/aspnetcore-tooling#1885](https://github.com/dotnet/aspnetcore-tooling/pull/1885))
  ## 1.21.18 (May 5, 2020)
  