annotation rotation doesn't change according to map bearing

[samderlust]

WHen change the map bearing. the annotation's rotation stay the same relative to the screen.

annotation's rotation should be change according to the map bearing

[NikosLaskaridis]

It would be great to have this option, to either change the annotation's rotation relatively to the screen or keep if stable. When, for example, we have an annotation with the symbol of a port (eg an anchor) this should be always at the same angle. On the other hand, if we have the annotation of a moving ship this should change when we rotate the map. So, an option like keepAngle: true / keepAngle: false would be a game changer.