Version 1.0.12 (Additional Query Methods)

Added #8 - select() method on query class. Now allows you to specify which fields you want your documents to return. Note: using select means your documents will not return document objects but only data arrays. This will allow you to only include the fields you want to use for your current task. (Excluding the rest and reducing memory usage).
Added last() method on query class to return the last item in the result array (opposite of first())
Added count() method on query class to return the number of documents found by the query.

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