Node labels were ignoring the 'cex' node data value (reported by Hannes Hettling)
Added "start" and "both" options for "arrowLoc" graph attribute (which will draw arrowhead at both ends of hyper edges)
Bug fix for converting Hypergraph to graphBPH so that hyperedge names are used as edge labels (reported by Hannes Hettling)
Update the R version check in drawEdge() to cope properly with major versions greater than 2 (!)