@wwtelescope/engine 7.31.0

@wwtelescope/engine 7.31.0 (2025-07-16)

• Add a method for getting a Place as XML. This method uses pre-existing engine
  functionality to create the XML representation (#330, @Carifio24).
• Add a method allowing the view's roll angle to be obtained from the WWT script
  interface (#329, @Carifio24).
• Expose the constructor for the Coordinates class to TypeScript (#328, @Carifio24).
• Expose several items from the engine to TypeScript, including the Vector3d and
  Coordinates classes, and functionality for obtaining the rise/set/transit
  time of an object (#324, @Carifio24).
• Allow adding an optional duration to the slew mover and the various goto methods of
  WWTControl (#320, @Carifio24). If specified, the movement will have the specified
  duration (in seconds), rather than a duration determined by the engine.
• Fix a bug where the gesture change handler was not respecting using the mode-dependent
  maximum zoom (#304, Carifio24). This fixes a bug that affected Solar System zooming
  on iOS.
• Fix a bug where the WWT clock ran too fast unless the rate was exactly 1 (#301, @Carifio24).
• Fix an issue with circle annotation sizing (#299, @pkgw). In particular, the circle
  sizing was missing a declination-dependent adjustment.
• Port code for drawing Galilean moons over from the Windows client (#298, @pkgw).