Shed Skin 0.0.17

And here goes 0.0.17, with some interesting fixes:

-support for assignment lists, so e.g. '[[a,b],[c,d]] = matrix' and 'for [[a,b],[c,d]] in matrices: ..' work now
-'_' can be used as special assignment target (expression is not assigned), e.g. '[[a,_],_] = matrix' works now
-support for '__name__' attribute of modules, so e.g. "if '__name__' == '__main__'" works now
-various improvements in exception handling (AssertionError, except some_tuple, ..)
-limit on tuple/list unpacking removed, so e.g. a,b,c,d,e,f = some_tuple works now
-improved printing of floats (using "%g" instead of "%f")