If the code hasn't been touched in this long, its probably release-worthy.

src/Sequencer.h

@@ -13,14 +13,16 @@ public:
     };
 
     Sequencer(std::vector<Scene> &&scenes);
+    Sequencer(std::vector<Scene> &&scenes, int startingIndex);
 
     void loop() override;
+    void onStart() override;
     void handleEvent(const InputEvent& evt) override;
 
     const char* currentSceneName();
     const std::vector<Scene> scenes() const;
 
 private:
-    int m_idx = 0;
+    int m_idx;
     std::vector<Scene> m_scenes;
 };