Label Font, Arrow Pointing to Node Edge, Plots integration

Hi,

This is a sweet package, thanks for your hard work writing it. I had a couple questions/requests about looks,

1. It would be really awesome if the node/edge labels could be LaTeXStrings. The times new roman font for the labels really downgrades the images given that I intend to use these plots for journal figures.

2. Is there a way to make the directed graph arrows point to the surface of nodes? Currently, I see this sloppy behavior where some sizes of nodes overlap with the end of the arrow, and I can't find any kw arg to fix it:
   

3. This package would be much more desireable if graph plots could be integrated into Plots. Maybe there is a way I don't see from the basic usage, but the only way I seem to be able to put these graphs with other plots in Plots.jl is by saving them as images, which feels gratuitous and rigid. I understand this might be a complex suggestion, but it would make a large difference.

Thanks again!

The issue names no files, tests, or implementation entry points. Start by reviewing the package's basic usage and current label and directed-edge rendering paths, then investigate how Plots.jl integration is structured; completion is not defined because the request combines three separate enhancements.