Counter intuitive result in centered with rounding modes specified

[jishnub]

It's not clear what the rounding mode refers to, since centered used .-center to generate the offset. This implies that the center of the original array, if rounded up, actually gets rounded down when negated.

julia> OffsetArrays.center(OffsetArrays.centered(ones(2,2), RoundDown))
(0, 0)

julia> OffsetArrays.center(OffsetArrays.centered(ones(2,2), RoundUp))
(-1, -1)

Intuitively it seems that the center of the array should have higher coordinate values when RoundUp is selected

[johnnychen94]

Yep, this was really a mistake.