In ``ECCV_2020_Navigation.ipynb``，``sim.scene_aabb.y()`` is not accessible.

[Yonggie]

Habitat-Sim version

v0.2.5

🐛 Bug

In ECCV_2020_Navigation.ipynb，sim.scene_aabb.y() is not accessible.

    # @markdown 3. Display trajectory (if found) on a topdown map of ground floor
    if found_path:
        meters_per_pixel = 0.025
        height = sim.scene_aabb.y().min

What is the new alternative way to access this data?