Add support for Python docstrings

I thought I should give some more info on this (this may be redundant, but I'll write it just in case it's useful).

A docstring starts with three "

It only ends with three "

Anything inside is a comment.

For example:

"""Here the docstring begins.

"this is still inside the docstring"

'this is also inside the doctsring'

• As well as this list item

>>> # and this doctest "with its result"

And this rather useless line :)

Here the docstring ends."""

By the way: The docstrings are often used for automatic APIdoc creation wia epydoc.

Correction:

# and this doctest

"with its result"

I forgot to add the blank line for this wiki.

This has been added with the new Ragel parser. The sample above parses properly.