Fix type hints for **kwargs to match PEP-484

[JohnLemmonMedely]

I just learned this today as I was figuring out why my IDE was flagging the type hints as wrong but kwargs should be hinted as the value in the dict and not as a dict itself. See PEP-484.

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[JohnLemmonMedely]

@desertaxle I'm hoping to merge this in a get a new release so we don't have to depend on my fork anymore. Is that doable this week?

[urimandujano]

Hey @JohnLemmonMedely, I'm sorry for the delay getting this reviewed and merged. This is a good find! I'll make sure to include this in the next release (which will likely be in early January).