PiperOrigin-RevId: 493091034 Change-Id: I65f2a68e6f182500dbd55cf93669f32e25d7ae66
PiperOrigin-RevId: 481823754 Change-Id: Ie8c2c65b11178952355830ef019fe2efdf774189
Also update the README banner so that the background grid lines scale more reliably to different screen PPI. PiperOrigin-RevId: 473598837 Change-Id: I43434b35333714922128f8fd625aa6eb62521a7f