changed the record structure of funcall_info.
reload the font table is it is not loaded or things have gone wrong.
bugfix: renamed one of the Args in percept2_spawn/2 to Args1.
changed only to profile functions with user given names.
improved the remove_duplicates function.
added support for suspend, garbage collection, also fixed some bugs regarding the callgraph construction.
allow user to filter nodes out of callgraph if it is too big
improved the callgraph visulisation.