Fixes #257: LSP client that doesn't support any workspace capabilities will cause an error if the server is using workspace/workspaceFolders
Fixes #257: LSP client that doesn't support any workspace capabilities will cause an error if the server is using workspace/workspaceFolders

microsoft/vscode-languageserver-node,microsoft/vscode-languageserver-node,microsoft/vscode-languageserver-node,microsoft/vscode-languageserver-node