added implementation of get_all_cliques together with helper method greater_neighbors
added implementation of get_all_cliques together with helper method greater_neighbors
move helper function into get_all_cliques
format docstring
change output format of discovered cliques
do not place every node in a tuble
start clique testing
resolve merge conflict
Prepare graph6 utils for generating/writing

* Rename graph6<->data<->n functions to descriptive names (at all
  occurences)
* Add the other conversion direction
* Add unit tests
Implemented writing graph6 format, plus unit tests
Implemented writing sparse6 format, unit tests
Add credit
Whitespace/tabs and python3ism fixes
Line length formatting to 80 cols
Formatting, add author, whitespace
Whitespace cleanup
fast euler cycle algorithm implemented
documentation updated
compatibility with python3
added reference