Feature Request: Meaningful stats, tables, and figures of binning performance

[colin-heberling]

With the current output, it is difficult to see what exactly was changed from the initial binning assignments, and if the binning assignments improved or not.

I think it would be useful to provide additional outputs (possibly optional) to describe the following:

1. An overall stats file showing the number of nodes changed at each step of the algorithm, binned vs unbinned contigs, number of multilabeled contigs, etc. (the log shows some, but not all of these stats)
2. Intermediate bin assignment tables (for each bin refinement step)
3. Visualizations of the bin assignments of the assembly graph for each bin refinement step (as in the graphbin2 documentation; how were those figures created?)

Another question: I don't see any contigs in the final results with multiple bin assignments. Are those contig ids duplicated in the results with different bin assignments per entry?