A nascent package to format JuliaLowering.SyntaxTree as Julia source code
with support for "semantic colouring". For example, one can run JuliaLowering's
scope analysis pass to determine the identity of each name in the code (tagging
it with a var_id). Then color this accordingly.
To try this out, you need the main (ie development) branch of JuliaSyntax.jl
Currently a pile of hacks, probably broken in various ways. Use at your own risk, etc :)