successfully transmit block map

Requires a binary data type, which requires a new project serializer

app/render/projectcopier.cpp

@@ -238,6 +238,14 @@ void ProjectCopier::QueueEdgeRemove(Node *output, const NodeInput &input)
 
 void ProjectCopier::QueueValueChange(const NodeInput &input)
 {
+  for (auto it = graph_update_queue_.begin(); it != graph_update_queue_.end(); ) {
+    if (it->type == QueuedJob::kValueChanged && it->input == input) {
+      it = graph_update_queue_.erase(it);
+    } else {
+      it++;
+    }
+  }
+
   graph_update_queue_.push_back({QueuedJob::kValueChanged, nullptr, input, nullptr});
   UpdateGraphChangeValue();
 }