changed type of steps to a pair of list of graphs and stringgit add src/de/chiller/vigral/algorithm/AbstractAlgorithm.java src/de/chiller/vigral/algorithm/Algorithm.java changed interface too
modified code to be compatible with new algorithm interface
add check to avoid nullpointer exception
made 'about' dialog querying main class for version number
added getter for version number and modified onResize call to be compatible with new 2 graph design
modified code to be compatible with new 2 graph visualization layout