/**
 * @defgroup pkg_tinyvcdiff   Tiny VCDIFF
 * @ingroup  pkg
 * @brief    Decoder for interleaved VCDIFF deltas
 *
 * # Introduction
 *
 * tiny-vcdiff is a decoder for binary delta files that have been generated by
 * [open-vcdiff](https://github.com/google/open-vcdiff) in the interleaved format.
 *
 * # Usage
 *
 * Every delta requires a source (the known data) and a target (the reconstructed
 * data). This implementation provides backends for the @ref drivers_mtd and
 * @ref sys_vfs storage drivers.
 *
 * # Example
 *
 * The example down below uses a @ref drivers_mtd device as known source data and
 * writes the resulting target data into a @ref sys_vfs file.
 *
 * ```c
 * #include "vcdiff.h"
 * #include "vcdiff_mtd.h"
 * #include "vcdiff_vfs.h"
 *
 * int apply_delta (const uint8_t *data, size_t data_len,
 *                  mtd_dev_t *source_mtd,
 *                  int traget_fd)
 * {
 *     int rc;
 *     vcdiff_t vcdiff;
 *     vcdiff_init(&vcdiff);
 *
 *     /* make sure source_mtd is already powered on */
 *     vcdiff_mtd_t source = VCDIFF_MTD_INIT(source_mtd);
 *     vcdiff_set_source_driver(&vcdiff, &vcdiff_mtd_driver, &source);
 *
 *     /* make sure the vfs file is already opened for writing */
 *     vcdiff_vfs_t target = VCDIFF_VFS_INIT(fd_target);
 *     vcdiff_set_target_driver(&vcdiff, &vcdiff_vfs_driver, &target);
 *
 *     rc = vcdiff_apply_delta(&vcdiff, data, data_len);
 *     if (rc != 0) {
 *         return rc;
 *     }
 *
 *     rc = vcdiff_finish(&vcdiff);
 *     return rc;
 * }
 * ```
 *
 * # License
 *
 * Licensed under MIT.
 *
 * @see      https://github.com/jue89/tiny-vcdiff.git
 */