Debugging changes. Created indexCandidateSisterRegions().
Created ancestralSyntenyDensity() method. Somewhat unnecessarily. It handles missing data better than other synteny methods and should be used to improve at some point.
First draft of indexCandidateSisterRegions().
Working version of indexCandidateSisterRegions() integrated into syntenic_paralogs().
IndexCandidateSisterRegions() debugged
Minor.