🎉 Imaging API Documentation update, plus expanded TextItem capabilities

[Karmalakas]

IMO it would be a much better to store pixels like:

[[R1, G1, B1], [R2, G2, B2], [R3, G3, B3]]

and

[[R1, R2, R3], [G1, G2, G3], [B1, B2, B3]]

Would be much easier to parse pixel by pixel or channel by channel