v1.23.0

• Fix typo in supressBuildAssetsNotification setting name (#3941, PR: #3942)
• Introduced a new /quickinfo endpoint to provide a richer set of information compared to /typeinfo. Consumers are encouraged to use it as their hover provider (omnisharp-roslyn#1808, PR: omnisharp-roslyn#1860
• Added support for Roslyn EmbeddedLanguageCompletionProvider which enables completions for string literals for DateTime and Regex (omnisharp-roslyn#1871)
• Improve performance of the textDocument/codeAction request. (PR: omnisharp-roslyn#1814)
• Provide a warning when the discovered MSBuild version is lower than the minimumMSBuildVersion supported by the configured SDK (PR: omnisharp-roslyn#1875)
• Use the real MSBuild product version during discovery (PR: omnisharp-roslyn#1876)
• Fixed debugging in .NET 5 preview SDKs (#3459, PR: omnisharp-roslyn#1862)
• Move omnisharp vscode to the new hover implementation (#3928)
• Ignore screen size is bogus errors with ps (#3580, PR: #3961)
• Fix all providers support (PR: #3440, PR: omnisharp-roslyn#1581)
• Fix MSBuild version mismatch with new SDKs (omnisharp-vscode#3951, PR: #1883)

Note about using .NET Core 3.1.401 or .NET 5 Preview 8 SDKs on Mono platforms

Because of the new minimum MSBuild version requirement of these new SDKs, it will be necessary to use the Mono packaged with the C# extension. You can set "omnisharp.useGlobalMono" to "never" in the VS Code settings to force the use of the included Mono.