[Tagging] incline=up_and_down

[Tobias Knerr]

On 26.09.22 02:21 Mateusz Konieczny wrote:
> But what can be done in cases where there is no real incline but
> path goes through series of up and down hops?

I would intuitively prefer if you put the information about the presence 
of "hops" into a specialized tag instead of making the value space of an 
established and approved key more messy.

Leave incline=* to describe the overall incline of the way in that case. 
That is: Do you end up lower or higher than you were in the start?