[Tagging] Swimming pool lanes

[Tobias Knerr]

On 19.05.21 17:15, Mateusz Konieczny via Tagging wrote:
> swimming_lanes would be less confusing in documentation,
> preset implementation would be easier and reduce
> risk of confusion (initially I was confused about kind of lanes).

Agreed. None of that is impossible to work around when using lanes=*, 
but it seems an unnecessary hassle that could easily be avoided by using 
a distinct key, such as swimming_lanes=*.