message: Change pre-release version number
diff: {
  "name": "csharp",
  "publisher": "ms-vscode",
  - "version": "1.14.0-beta2",
  + "version": "1.14.0-beta.2.config-default-sln",
  "description": "C# for Visual Studio Code (powered by OmniSharp).",
  "displayName": "C#",
  "author": "Microsoft Corporation",
  },
  "omnisharp.defaultSolution": {
  "type": "string",
  - "default": "",
  + "default": null,
  "description": "The name of the default solution file if the root folder of the repo has multiple *.sln files. "
  },
  "omnisharp.useEditorFormattingSettings": {
  