plot_erp: layout legend_position not working

[behinger]

       plot_erp!(
       f[1,1], df,mapping = (;group=:duration,color=:duration),
       categorical_color=false,
       categorical_group=true,
       layout=(;legend_position=:bottom))

I wanted to move the legend to the bottom, but it is not working, legend stays at the right side

[behinger]

this is actually also true for plot_erpimage! - havent tested others

[vladdez]

use legend = (; valign = :bottom,)

Why layout.legend_position even exists in examples?

[behinger]

I think this is a remnant from the FaPra students. I think what they wanted to do is to put the position of the legend and it's orientation in one command. Right now you have to do:
valign = :bottom, orientation = :horizontal

that is, provide two commands to get a better legible legend - I think we should just provide an example where we specify both and remove the legend_position confusing argument. I dont think it is worth supporting (and obv. doesnt work anyway right now)

[vladdez]

fixed in #237