fixes for wasm client

- ui_enum
- spdlog pthread
- url hostname from emscripten
- websocket ping pong not exposed on js
- version string in client
- cleanup the generation of the version string
- set fixed path for wasm ws

server/main.cpp

@@ -29,9 +29,10 @@ int main(int argc, char *argv[])
     QCoreApplication a(argc, argv);
 
     QCommandLineParser parser;
-    parser.setApplicationDescription("unisim_cpp server\n\tversion: " + QString::fromStdString(Git_version::branch) +
-                                     "-" + QString::fromStdString(Git_version::shortSha1) +
-                                     QString::fromStdString(Git_version::dirty ? "-dirty" : ""));
+    parser.setApplicationDescription(QString("unisim_cpp server\n\tVersion: %1-%2%3")
+                                         .arg(Git_version::branch)
+                                         .arg(Git_version::shortSha1)
+                                         .arg(Git_version::dirty ? "-dirty" : ""));
     parser.addHelpOption();
 
     QCommandLineOption port_option(QStringList() << "p"

server/simulators.cpp

@@ -215,8 +215,8 @@ json Simulators::changed_UI_items()
     json changed;
     changed["event"]["type"] = "ui_changed";
 
-    const auto& ui_items     = after["UI_items"];
-    const auto& prev_ui_items = m_before["UI_items"];   // may be null on first call
+    const auto &ui_items = after["UI_items"];
+    const auto &prev_ui_items = m_before["UI_items"]; // may be null on first call
 
     const size_t count = ui_items.size();
     for (size_t i = 0; i < count; ++i)