tuned comments;

tuned;

publish extension on Visual Studio Marketplace;

updated VSCode extension to "isabelle vscode_server";

merged

DiagnosticSeverity according to implementation https://github.com/Microsoft/vscode-languageserver-node instead of documentation https://github.com/Microsoft/language-server-protocol/blob/master/protocol.md;

support for syslog messages; clarified shutdown;

prefer stable state -- reduce repeated diagnostics;

more uniform pending_input / pending_output; explicit Document_Model.uri; tuned;

unused;