* A collection of functions for editing DNA sequences.  It
  provides functions to make editing dna in Emacs easier.

Dna-mode will:
 * Fontify keywords and line numbers in sequences.
 * Fontify bases when font-lock-mode is disabled.
 * Incrementally search dna over pads and numbers.
 * Complement and reverse complement a region.
 * Move over bases and entire sequences.
 * Detect sequence files by content.