message: Add
  1.17.0 changelog entry for preview Razor tooling
diff: -## Known Issues in 1.16.0
  +## Known Issues in 1.17.0
  -* There currently is no completion support for package references in csproj files. ([#1156](https://github.com/OmniSharp/omnisharp-vscode/issues/1156))
  - * As an alternative, consider installing the [MSBuild Project Tools](https://marketplace.visualstudio.com/items?itemName=tintoy.msbuild-project-tools) extension by @tintoy.
  +* Known limitations with the preview Razor (cshtml) language service:
  + * Support for tag helpers and formatting not yet implemented
  + * Limited support for colorization
  + * Loss of HTML completions following C# less than (`<`) operator
  + * Error squiggles misaligned for expressions near the start of a new line
  + * Leaving Razor files open for a significant period of time results in loss of Razor C# tooling on macOS
  ## 1.17.0 (Not yet released)
  +* Added preview Razor (cshtml) language service with support for C# completions and diagnostics. Please report issues with the preview Razor tooling on the [aspnet/Razor.VSCode](https://github.com/aspnet/Razor.VSCode/issues) repo. To disable the preview Razor tooling set the "razor.disabled" setting to `true`. (PR: [2554](https://github.com/OmniSharp/omnisharp-vscode/pull/2554))
  +
  * Added omnisharp.minFindSymbolsFilterLength setting to configure the number of characters a user must type in for "Go to Symbol in Workspace" command to return any results (default is 0 to preserve existing behavior). Additionally added omnisharp.maxFindSymbolsItems for configuring maximum number of items returned by "Go to Symbol in Workspace" command. The default is 1000. (PR: [#2487](https://github.com/OmniSharp/omnisharp-vscode/pull/2487))
  * Added a command - "CSharp: Start authoring a new issue on GitHub" to enable the users to file issues on github from within the extension with helpful config information from their system.(PR: [#2503](https://github.com/OmniSharp/omnisharp-vscode/pull/2503))
  * Fixed a bug where OmniSharp flame was red inspite of OmniSharp loading the projects without any errors.(PR: [#2450](https://github.com/OmniSharp/omnisharp-vscode/pull/2540))
  +## Known Issues in 1.16.0
  +
  +* There currently is no completion support for package references in csproj files. ([#1156](https://github.com/OmniSharp/omnisharp-vscode/issues/1156))
  + * As an alternative, consider installing the [MSBuild Project Tools](https://marketplace.visualstudio.com/items?itemName=tintoy.msbuild-project-tools) extension by @tintoy.
  +
  ## 1.16.0 (September 10, 2018)
  #### Project System
  