'schema' is more a schema enhanced by python than just a checker. It can convert types, set defaults so after 'Box' I can simple access config with a.b.c. It ma

'schema' is more a schema enhanced by python than just a checker. It can convert types, set defaults so after 'Box' I can simple access config with a.b.c. It may be subtle but it is much more powerful than it looks. There are many of these things. Maybe some are better but I like this one.