It is not exactly what we want and is only proof of concept.
On adding a stroke we first add a LODN version and then LOD0,
right after that. Of course it is not usable yet.

TODO:
1) Update the LODN projection on:
   a) zoom change
   b) legacy stroke
   c) LON0->LODN switch
2) Reorder strokes more efficiently
3) Add delay before switch LODN->LOD0
4) Fix many other WIP bugs :)