mrml-cli 1.4.0

CLI for the Rust implementation of MJML renderer
# Changelog
All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

## [1.4.0]https://github.com/jdrouet/mrml/compare/mrml-cli-v1.3.3...mrml-cli-v1.4.0 - 2023-12-01

### Added
- *(mrml-cli)* bump mrml version

### Other
- bump mrml-core to 2.0.0-rc.7
- bump mrml-core to 2.0.0-rc.6
- *(mrml-core)* bump to 2.0.0-rc4
- format code using rustfmt and create config
- *(mrml-cli)* Update clap to 4.3
- *(deps)* Update env_logger requirement in /packages/mrml-cli ([#309]https://github.com/jdrouet/mrml/pull/309)
- move license files
- move back mrml-cli to repository
- move code source to only keep mrml-core