Do we want whitespace around //

[nickrobinson251]

Currently guidance:

Surround most binary operators with a single space on either side: ...
Binary operators may be excluded from this guideline include: the range operator (:), rational operator (//), exponentiation operator (^)

But for the sake of implementing a formatter (#7, domluna/JuliaFormatter.jl#283), do we prefer 1//2 or 1 // 2?

[oxinabox]

1//2 is a single number

[oxinabox]

We want that it currently says