README.md

This repo contains:

• toml crate for serde support
• toml_edit crate for format-preserving editing of TOML
• toml_datetime crate for a common type definition between toml and toml_edit
• serde_spanned crate for capturing spans when deserializing keys and values
• toml_parser crate: a low-level format-preserving TOML lexer and parser
• toml_writer crate: a low-level interface for writing out TOML