pub const MIN_GTF_COLUMNS: usize = 9;
// pub const MAX_GTF_COLUMNS: usize = 10;

pub const CHROMOSOME_COL: usize = 0;
pub const SOURCE_COL: usize = 1;
pub const FEATURE_COL: usize = 2;
pub const START_COL: usize = 3;
pub const END_COL: usize = 4;
pub const SCORE_COL: usize = 5;
pub const STRAND_COL: usize = 6;
pub const FRAME_COL: usize = 7;
pub const ATTRIBUTES_COL: usize = 8;
