Lack of clarity around what type a container with cardinality exactly 4096

[Dr-Emann]

then we use the cardinality to determine the type: a cardinality of up to 4096 indicates an array container whereas a cardinality above 4096 indicates a bitset container.

I think changing "up to" to "up to and including" would clarify what should happen with a cardinality of exactly 4096.

https://oneminuteenglish.org/en/up-to-inclusive-or-exclusive/ says

“Up to” can have an exclusive meaning when dealing with subjects that are more precise like maths and software development. The best way to avoid confusion is to use “up to and including X” or “up to and not including X ”, where X is the upper limit.

[lemire]

Pull request invited.