- undo redo now works fine for both measure tool creation commands - added LayerHolder to streamline layer index management - added overloads for ORTHANC_ASSERT with no string message (some heavy preprocessor wizardry in there) - fixing wasm BasicScene is *not* finished.

mergeInto(LibraryManager.library, {
  WasmDelayedCallExecutor_Schedule: function(callable, timeoutInMs/*, payload*/) {
    setTimeout(function() {
      window.WasmDelayedCallExecutor_ExecuteCallback(callable/*, payload*/);
    }, timeoutInMs);
  }
});