I've been looking around for any info how one might go about rotating
patches, such as Rectangles, by a user supplied angle. The transform
module/affine class mention this but I'm struggling with how to actually use
them this way (LazyValues?) and haven't found an example to illustrate it
Also is there a way to use normalised coordinates rather than data for
positioning patches? I'd like it to appear in the same place (lower right)
without having to adjust if the plot scaling changes.