fix apsp
fixes an error that leads to an ArrayOutOfBoundsException when trying to truncate an empty array
adds new method to plotting for parameters with series data array
fixes a bug in DArrayList that lead to null when attempting to get a node by index
adds new (Weak/Strong)Connectivity metrics (to replace connected components)
adds getter for components ofr Connectivity metric(s)
removes final statement from skipComments flag
plotting: now only one value plot for i series
aggr. bug fix on runs with differing batch size
PFP model.
known bug: isolated nodes are causing an endless loop
current (possibly not final) fix: if node degree is 0, return exponent=0 and not -infinity
fix for isolated nodes @ pfp destination computation