1.0.0

 - Removed almost useless if statement that was checking if `type` is valid. The programmer is responsible for that and should use existing message types.
 - Updated `couleurs` dependency.
 - Lowercase message types.
 - `_config` becomes `config`
 - `getDate` handler. Fixes #3.
 - Use `process.stdout.isTTY` to handle redirected output.