Ensure compatibility with latest version of all dependencies

[rob-luke]

Handy way to view which packages are out of date (in addition to CompatHelper)...

using Pkg

cd(joinpath(DEPOT_PATH[1], "registries", "General")) do
         deps = Pkg.dependencies()
         registry = Pkg.TOML.parse(read("Registry.toml", String))
         general_pkgs = registry["packages"]
    
         constrained = Dict{String, Tuple{VersionNumber,VersionNumber}}()
         for (uuid, dep) in deps
             suuid = string(uuid)
             dep.is_direct_dep || continue
             dep.version === nothing && continue
             haskey(general_pkgs, suuid) || continue
             pkg_meta = general_pkgs[suuid]
             pkg_path = joinpath(pkg_meta["path"], "Versions.toml")
             versions = Pkg.TOML.parse(read(pkg_path, String))
             newest = maximum(VersionNumber.(keys(versions)))
             if newest > dep.version
                 constrained[dep.name] = (dep.version, newest)
             end
         end
    
         return constrained
     end
end

From https://bkamins.github.io/julialang/2020/05/11/package-version-restrictions.html

[rob-luke]

Done