PN Transformation
PN coverage graph, cov nodes and transition matrix
IDs, Input / Output of PN, PN in general...
Kegg, BRENDA-Bug found, not fixed yet
graphML import
VAML fixed, BEA got IDs, Pathway addVertex() / addEdge() simplified
BRENDA-Bug fixed (second retrieval leads to correct pathway)
SBML fixed
several RandomGraphs fixed
minor changes, mostly warnings