`uppercase=false` does not lowercase the query

[bbstilson]

Piggy backing off : nrempel/sleek#16

If uppercase is false, the query is not lowercased. Either there should be an explicit flag to lowercase the query, or uppercase = false should lowercase the query.

[wugeer]

@bbstilson Currently, if uppercase is false, it means that no action will be taken on the query . I have a note to fix this issue, and I'll submit a PR later