public static CharacterGene of(final char allele) {
		return new CharacterGene(allele, DEFAULT_CHARACTERS);
	}
Create a new character gene from the given character. If the character
is not within the {@link #DEFAULT_CHARACTERS}, an invalid gene will be
created.

@param allele the character value of the created gene.
@return a new character gene.
jenetics/src/main/java/io/jenetics/CharacterGene.java