@Override
	public int compareTo(final BitChromosome that) {
		return toBigInteger().compareTo(that.toBigInteger());
	}
Return the BitChromosome as String. A TRUE is represented by a 1 and
a FALSE by a 0. The returned string can be used to create a new
chromosome with the {@link #of(CharSequence)} constructor.

@return String representation (containing only '1' and '0') of the
        BitChromosome.
jenetics/src/main/java/io/jenetics/BitChromosome.java