Brightness-augment episodes in place (random levels [0.8, 0.9, 1.1, 1.2], seed=42)

Brightness-augment episodes in place (random levels [0.6, 0.7, 0.8, 0.9, 1.1, 1.2], seed=42)

Brightness-augment episodes in place (partition-assigned over levels [0.6, 0.7, 0.8, 0.9, 1.1, 1.2])

initial commit