// note, if you want to define an alphabet for a sequence, you probably want
// to update the enumeration in Sequence, and Sequence::get_sequence
//! The standard DNA alphabet, with unique, and unknown characters
// note, if you want to define an alphabet for a sequence, you probably want
// to update the enumeration in Sequence, and Sequence::get_sequence
//! The standard DNA alphabet, with unique, and unknown characters