Heredoc triplequote

i've implemented and documented here-docs and triple-single-quotes for directive parameters, like this:

[[!more text=<<MORETEXT
[[!format py <<PYTHONCODE
def funky(spam):
    """this is a most funky method."""
    print spam, '''oh my golly!'''
<<PYTHONCODE]]
other_more_param='''oh my golly!''']]