2.1.2

bibliometrix v2.1.2 (Release date: 2019-03-14)

New functionality:
*biblioshiny: new dendrogram plot in factorial analysis (Conceptual Structure)
*biblioshiny: added the number of cluster argument in factorial analysis (Conceptual Structure)
*biblioshiny: added Most Cited Sources (from References) in Sources
*biblioshiny: added disambiguation parameter in affiliation
*Speed improvements in several functions