modifying to experiment with storing _sequence as a numpy array rather than a str - these changes facilitate that
removed alt cap for class name based on pep8's suggestion ('When using abbreviations in CapWords, capitalize all the letters of the abbreviation.'
removed commented line
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
reverted previous change - this duplicated a line that was already in there
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updating to use pep8's naming convention
updated based on suggestion from @jrrideout