message: Add recent updates to changelog
diff: * There currently is no completion support for package references in csproj files. ([#1156](https://github.com/OmniSharp/omnisharp-vscode/issues/1156))
  * .NET Core SDK 2.0-preview2 is not yet supported. ([#1495](https://github.com/OmniSharp/omnisharp-vscode/issues/1495))
  +## 1.11.0 _(Not Yet Released)_
  +
  +#### Completion List
  +
  +* No longer trigger completion when a '<' character is typed. ([#1521](https://github.com/OmniSharp/omnisharp-vscode/issues/1521), PR: [#1530](https://github.com/OmniSharp/omnisharp-vscode/pull/1530))
  +
  +#### Other Updates and Fixes
  +
  +* Allow the ".NET: Restore Packages" command to run on projects targeting full framework. ([#1507](https://github.com/OmniSharp/omnisharp-vscode/pull/1507), PR: [#1545](https://github.com/OmniSharp/omnisharp-vscode/pull/1545)) _(contributed by [@adamhartford](https://github.com/adamhartford))_
  +
  ## 1.10.0 (May 25, 2017)
  #### Completion List
  * Added `csharp.unitTestDebugingOptions` setting to pass launch.json-style debug options (example: `justMyCode`) when unit test debugging.
  #### Debugger
  +
  * Resolves crash on OSX when the target process loads an embedded PDB ([#1456](https://github.com/OmniSharp/omnisharp-vscode/issues/1456)). This commonly affects users trying to debug XUnit tests.
  * Enhanced exception peek display to provide additional exception properties.
  