Add keyword `isedges::Bool = false` to function `heatmap_edges`
Add keyword `isedges::Bool = false` to function `heatmap_edges`

Add the keyword `isedges::Bool` to the functions `heatmap_edges` and `_heatmap_edges`. Default is `false`. If `true`, the functions treat the given vector `v` as edges and not as midpoints.

tbreloff/Plots.jl