macOS support

Browser.py

@@ -927,7 +927,7 @@ class Browser(ft.Row):
             if sys.platform == "win32":
                 os.startfile(str(EntryPath))  # the default app
             else:
-                subprocess.Popen(["xdg-open", str(EntryPath)])
+                subprocess.Popen(["open" if sys.platform == "darwin" else "xdg-open", str(EntryPath)])
         except OSError as Error:
             self._Notify(f"Couldn't open {EntryPath.name}: {Error}")