added method to search for vertices with values similar to a given value
fixed: vertex deletions are not propagated to the layout engine
added method to search duplicate vertices, rewrote deleting duplicates using this method, fixed vertex counter by firing the delete vertex event after deleting the vertex, also fire delete edge event after deleting edge
fixed transformed coordinates
draw only visible neurons, limit number of drawn neurons
reward network for output words that are similar to words in the graph
changed title