ANN: magnitude 0.9.1

[juan at juanreyero.com]

> A further issue, that requires a change of interface: Please comply
> with PEP 8 <URL:http://www.python.org/dev/peps/pep-0008/> for your
> module interface. In particular, please name classes with TitleCase,
> and functions, methods, and instance names with
> lower_case.

Done, almost.  I should have seen that document before.  I
think magnitude is compliant now, both in its API and its
innards.  The only thing missing is to raise objects instead
of strings.

> Also: "precision" is the correct spelling of that word.

Now that's embarrassing.  Thanks.

jm