Changes in version 0.1-7
    * plot checks now if 0 rules/itemsets are used
    * scatterplots with a single rule now display correctly
    * transition from igraph0 to igraph

Changes in version 0.1-6
    * plot method matrix does not accept custom colors 

Changes in version 0.1-5
    * fixed namespace (imports seriation now)

Changes in version 0.1-4
    * fixed font family for igraph under windows (is now Arial).
