Azimuth description and diagram do not match

(This is kind of the same point as #14, but that issue requests a change to the definition - I'm simply noting that the diagram doesn't match the written definition)

view:azimuth is defined as:

Viewing azimuth angle. The angle measured from the sub-satellite point (point on the ground below the platform) between the scene center and true north. Measured clockwise from north in degrees (0-360).

which I interpret as "Azimuth is the angle between the lines S-North and S-P", where S = Sub Satellite Point and P = Target (or Scene Centre) Point.

However, the diagram in the readme indicates a different definition such that "Azimuth is the angle between the lines P-North and P-S":

In short, if a satellite is due south of the target and we ignore spherical geometry awkwardness, which of these values is view:azimuth meant to be?

• 0 degrees, the satellite is looking north (text description)
• 180 degrees, the satellite is located south of the target (diagram)

Start with the view:azimuth definition and the diagram in the README, then compare both with the issue's due-south example. Confirm the intended azimuth convention with the extension's view-angle context, and update the written definition and diagram so they agree and the example has an unambiguous answer.