TODO

Add tutorial
- Config loading
- Config parsing
- Config manip
- Env and config var substitution
  - Escaping
Generic
- Base64 decoding of values
Java properties
- Add unicode escaping
- Add escaping of key/value separator = and :
INI config
- Case insensitive properties and sections
- Escape characters
TOML
- Add support for the standard (https://github.com/toml-lang/toml)
YAML
- Add support for the standard