initial commit - tests for transpose and atomic inversion
fixed dfs, bfs and added tests for them - they both rely on a push-pop-container to be implemented generically
get rid of the println-statements
threw out stuff that isnt used
topological sorting; incl. a couple of tests; tests are too tight ==>> make it possible to check for alternative sortings since these are not uniquely defined
more stuff
added the dijstra-algorithm
updated gitignore; make tests run
merge