I've fixed the southern border of East Prussia, which before was displayed like the postwar border of Kaliningrad. I also added Danzig. To do this I modified East Prussia and Poland and added Danzig. This partially address #40 - the changes would have to be copied to the 1920 and 1938 maps, but I don't know geojson well enough to do that safely. This was done with vector.rocks.
I've fixed the southern border of East Prussia, which before was displayed like the postwar border of Kaliningrad. I also added Danzig. To do this I modified East Prussia and Poland and added Danzig. This partially address #40 - the changes would have to be copied to the 1920 and 1938 maps, but I don't know geojson well enough to do that safely. This was done with vector.rocks.