Add meta/stats.json computed by compute_and_push_stats.py

Add 1 brightness-augmented copy per episode (partition-assigned over levels [0.5, 0.6, 0.7, 0.8, 0.9, 1.1, 1.2])

Add 1 brightness-augmented copy per episode (partition-assigned over levels [0.5, 0.6, 0.7, 0.8, 0.9, 1.1, 1.2])

initial commit