Removes all cruft from the text.

def clean_text(s):
    """Removes all cruft from the text."""
    SPACES_RE = re.compile(r'\s+')
    SPECIAL_CHARS_RE = re.compile(r'[^\w\s\.\-\(\)]')
    s = SPACES_RE.sub(' ', s)
    s = s.strip()
    s = SPECIAL_CHARS_RE.sub('', s)
    return s