should `similar(::ZeroDimensionalArray, ::Int)` return `Vector` or `FixedSizeVector`?

[nsajko]

Currently similar falls back to returning Array:

julia> using ZeroDimensionalArrays

julia> a = ZeroDimensionalArrayImmutable(fill(false))
0-dimensional ZeroDimensionalArrayImmutable{Bool}:
0

julia> similar(a, 1)
1-element Vector{Bool}:
 0

julia> similar(a, 1, 1)
1×1 Matrix{Bool}:
 0

Perhaps it'd be nicer to return FixedSizeArray? That would require a dependency on FixedSizeArrays, though.