Animating hint in the frame state not consistently set

[tschaub]

During an animated zoom, renderers get called with a frame state with a truthy viewHints[ol.ViewHint.ANIMATING] many times during animation and a falsey one once at the end. During an animated pan, renderers get called with a truthy viewHints[ol.ViewHint.ANIMATING] always.

[tschaub]

This may actually not be an issue. Investigating...

[tschaub]

This indeed is invalid. Renderers do get called with a falsey animating hint at the end of a kinetic pan. The canvas vector layer renderer was not properly setting its dirty flag.