[Tagging] Water slide as waterway

[panierAvide]

Hi,

User RicoZ has launched a new discussion about water slides tags, in 
order to consider them also as waterways. It is an interesting question 
and we need more opinions about it. He wants to keep the discussion on 
the wiki so if you want to take part of it, you can go here : 
https://wiki.openstreetmap.org/wiki/Talk:Proposed_features/Extend_water_slides

PanierAvide.