Update chessarbiter and improve pgn loader

src/MainWindow.cpp

@@ -4,6 +4,7 @@
 #include "preferences/preferences.hpp"
 
 wxDEFINE_EVENT(REFRESH_TAB_TITLE, wxCommandEvent);
+wxDEFINE_EVENT(NEW_GAME_EVENT, wxCommandEvent);
 
 /// ---------- MainWindow ----------
 
@@ -52,6 +53,7 @@ MainWindow::MainWindow()
   Bind(wxEVT_AUINOTEBOOK_PAGE_CHANGED, &MainWindow::OnPageChange, this,
        wxID_ANY);
   Bind(REFRESH_TAB_TITLE, &MainWindow::OnRefreshTabTitle, this, wxID_ANY);
+  Bind(NEW_GAME_EVENT, &MainWindow::OnNewGame2, this, wxID_ANY);
   Bind(wxEVT_CLOSE_WINDOW, &MainWindow::OnClose, this);
 }
 
@@ -142,6 +144,11 @@ void MainWindow::OnNewGame(wxCommandEvent &event) {
   }
 }
 
+void MainWindow::OnNewGame2(wxCommandEvent &event) {
+  Game *g=(Game*)event.GetClientData();
+  NewGame(g);
+}
+
 void MainWindow::OnPageChange(wxAuiNotebookEvent &event) {
   TabInfos *infos = dynamic_cast<TabInfos *>(notebook->GetCurrentPage());
   if (infos->type != TabInfos::GAME) {