Use better marker (rectangle) for traffic lights

Author: kallenberg

omega_prime/recording.py

@@ -906,7 +906,7 @@ def plot_tl(self, ax=None):
                 ax.plot(
                     x,
                     y,
-                    marker="o",
+                    marker="s",
                     label=f"Traffic Light {tl_dict[tl].id.value}",
                     c="blue",
                     alpha=0.7,