Small parser cleanups

[derek73]

Bundle of trivial cleanups, one PR:

• Dead check in _process_initial (parser.py:249): if len(parts) and isinstance(parts, list) — str.split(" ") always returns a non-empty list
• len(list(titles)) / len(list(suffixes)) double-wrap in parse_pieces (parser.py:1210-1213) — the values are already lists; use truthiness
• full_name property returns self.__str__() (parser.py:743) — call str(self)
• Aligned-= assignment spacing in __init__ (parser.py:119-123), PEP 8 E221