Fix intword for 1,000 decillion

[hugovk]

Fixes #86.

Changes proposed in this pull request:

• When deciding what power to use, it assumed the next one was always 1,000 (=10**3) times bigger
• That's the case for most, but the final step from decillion to googol is much bigger:

powers = [10**x for x in (3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 100)]
human_powers = (
    NS_("thousand", "thousand"),
    NS_("million", "million"),
    NS_("billion", "billion"),
    NS_("trillion", "trillion"),
    NS_("quadrillion", "quadrillion"),
    NS_("quintillion", "quintillion"),
    NS_("sextillion", "sextillion"),
    NS_("septillion", "septillion"),
    NS_("octillion", "octillion"),
    NS_("nonillion", "nonillion"),
    NS_("decillion", "decillion"),
    NS_("googol", "googol"),
)

• Instead of comparing the gap to 10**3, compare to the actual gap: powers[ordinal_] / powers[ordinal_ - 1]

[NavisGames]

bump for merging pull reqeuest, when does the new update with the fixes drop? Until then i have edited my local humanize files 😅

[hugovk]

Thanks for the bump, was waiting to see if anyone had any feedback/approvals :)

We're due a release, I'll do one within the next week, maybe on the weekend.