v1.3.2
* `iwkv_cursor_copy_key` now aware of `IWDB_COMPOUND_KEYS` mode (iwkv.h) * `iwkv_cursor_copy_key` can accept zero kbuf,kbufsz only compound part will returned in this case (iwkv.h)
* `iwkv_cursor_copy_key` now aware of `IWDB_COMPOUND_KEYS` mode (iwkv.h) * `iwkv_cursor_copy_key` can accept zero kbuf,kbufsz only compound part will returned in this case (iwkv.h)