TODO
----
1) Write tests
2) Handle out-of-bounds errors when laying out graph
3) More and better error reporting
4) Add more options
5) make edges leave and arrive at nodes in better positions/angles
TODO
----
1) Write tests
2) Handle out-of-bounds errors when laying out graph
3) More and better error reporting
4) Add more options
5) make edges leave and arrive at nodes in better positions/angles