feature request: estimate_betweenness set a lower bound for path length

[ambuehll]

I use igraph frequently on very large graphs, and thus I use estimate_betweenness. One of my issues is that I would like to restrict betweenness centrality to be calculated only from paths that are longer than X (similar to cutoff value, but as a min. instead of a max.). Any ideas on how to implement this? Thanks!