io → adaptation Relation

File in seqan3/io	Includes file in seqan3/alphabet/adaptation
sam_file / input.hpp	char.hpp
sequence_file / format_fasta.hpp	char.hpp
sequence_file / format_fastq.hpp	char.hpp
sequence_file / input.hpp	char.hpp
structure_file / format_vienna.hpp	char.hpp
structure_file / input.hpp	char.hpp