/**
 * @defgroup pkg_etl Embedded Template Library
 * @ingroup  cpp
 * @ingroup  pkg
 * @brief    Embedded Template Library (etl)
 * @details  This is a drop-in replacement for the C++ standard library with fixed-size containers.
 *           It does not rely on dynamic memory. It also provides type-traits for boards without standard library.
 *           See the website for more details.
 *
 * @see      https://www.etlcpp.com
 * @see      https://github.com/ETLCPP/etl
 */