first stab at calculatePositionsAndScale
There's a test and it passes!
drawing a correct bounding box; add tests
factor out packer; using overlay packer for now
Remove outlying Macquarie Island from Australia
iterating on packing strategies
URL-configurable packers, adjustLayoutToFit
horizontalPacker (really easy with adjustLayoutToFit!)
vertical packer
diagonal packer
gray outlines
Combined packing strategy