Markdown in Python: Lists with spaces

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One of my users found a weird bug when entering some Markdown in a Django form. If you include more spaces after the bullet than in the markdown tab length, then the blockparser throws an error. (IndexError: child index out of range)

To replicate:

1. Check markdown.TAB_LENGTH
2. Enter text starting with a bullet and then more spaces than in the TAB_LENGTH
3. Try to run it through markdown

(Note in below example there are 5 fives between * and test in the first line)

>>> text = '*     test'
	>>> markdown.markdown(text)
	Traceback (most recent call last):
	  File "<stdin>", line 1, in <module>
	  File "/Library/Python/2.5/site-packages/markdown/__init__.py", line 587, in markdown
	    return md.convert(text)
	  File "/Library/Python/2.5/site-packages/markdown/__init__.py", line 389, in convert
	    root = self.parser.parseDocument(self.lines).getroot()
	  File "/Library/Python/2.5/site-packages/markdown/blockparser.py", line 60, in parseDocument
	    self.parseChunk(self.root, '\n'.join(lines))
	  File "/Library/Python/2.5/site-packages/markdown/blockparser.py", line 75, in parseChunk
	    self.parseBlocks(parent, text.split('\n\n'))
	  File "/Library/Python/2.5/site-packages/markdown/blockparser.py", line 92, in parseBlocks
	    processor.run(parent, blocks)
	  File "/Library/Python/2.5/site-packages/markdown/blockprocessors.py", line 295, in run
	    self.parser.parseBlocks(lst[-1], [item])
	IndexError: child index out of range
	>>> markdown.TAB_LENGTH
	4
	>>> markdown.TAB_LENGTH = 7
	>>> markdown.markdown(text)
	u'<ul>\n<li>test</li>\n</ul>'
	>>>

**UPDATE**
The problem appears to be that it sees the spaces as being indentation and assumes it has a parent because the indentation is there. (Not sure why it's not checking the indentation _before_ the *, but I didn't look far enough). Adding a check to blockprocessors.py seems to fix it:

line 293:
	if ((item.startswith(' '*markdown.TAB_LENGTH)) and (len(lst) > 0)):

at least, it doesn't throw an error, although you then run into my other ticket about it creating a paragraph, rather than list items.

**IGNORE ME** I hadn't upgraded to 2.0.3

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