[SciPy-user] Changes allow string -> number casting

I just checked in to SVN, the changes needed to allow strings (and unicode) to be converted to numbers:

...

...

print array(['3.0','4','5','6']).astype(float) array([ 3., 4., 5., 6.])

It is not the fastest-possible approach (it goes through the Python int, long, float, and complex __new__ methods), but it works. -Travis