def full_changelog_header_range(range)
      from, to = range.split '..'
      from_commit, to_commit = [from, to].map { |ref| rev_parse ref }
      Koios::Doc.write {
        [pre(["from: #{from} <#{from_commit.oid}>",
              "to:   #{to} <#{to_commit.oid}>"])]
      }
    end
def full_changelog_header_range(range)
      from, to = range.split '..'
      from_commit, to_commit = [from, to].map { |ref| rev_parse ref }
      Koios::Doc.write {
        [pre(["from: #{from} <#{from_commit.oid}>",
              "to:   #{to} <#{to_commit.oid}>"])]
      }
    end
Get the header when a range is defined
 @param [String] range Define a specific range of commits
 @return [String] header with a range