Turn ExpressionExplorer.jl into its own package

[fonsp]

🥳 https://github.com/JuliaPluto/ExpressionExplorer.jl

TODO

• [x] ExpressionExplorer.jl 1.0.0 release (needs https://github.com/JuliaPluto/ExpressionExplorer.jl/issues/1)
• [x] What should happen to the extra functions? is_implicit_using transform_dot_notation collect_implicit_usings compute_usings_imports! compute_usings_imports external_package_names is_toplevel_expr get_rootassignee can_be_function_wrapped

[github-actions[bot]]

Try this Pull Request!

Open Julia and type:

  julia> import Pkg
  julia> Pkg.activate(temp=true)
  julia> Pkg.add(url="https://github.com/fonsp/Pluto.jl", rev="expression-explorer-package")
  julia> using Pluto

[Pangoraw]

Looking forward to the new Julia/JS ratio for the repo when this is merged :eyes:

[fonsp]

ohohhh