Camera is now using Animate2 and it's mostly working, but there's a few more refactors needed.

camera.hpp

@@ -20,6 +20,7 @@ namespace cinematic {
     void position(float x, float y);
     void move(float x, float y);
     bool playing();
+    void update();
     void render(sf::RenderTexture& target);
     void play();
     void style(const std::string &name);