dupNodes 0.3.0

Changes: * Adds DNSLbetweenness_for_graph * Refactors duplicated nodes detection to private function

Fixes: * Documentation fixes and general improvement

dupNodes 0.2.0

Changes: * Adds dup.nodes.from.graph * Adds florentine.sn * Adds new vignette that uses both

dupNodes 0.1.0

First version.