Added shared files for working with multi_code
First version of thrackler
Added Makefile
Prepare graph for thrackling
Merge branch 'master' of github.com:nvcleemp/thrackles
Methods to start embedding the thrackle
Changed ordering of edges

This way we will never have to work with a disconnected graph.
Added check to verify that input graph was connected
Renamed variables
Use variable instead of hardcoding the values
Moved comment
Fixed bug: wrong variable name
Since the second edge is adjacent to the first edge, we can also embed it immediately.
Added function prototype for output method
Added code to handle a completed thrackle
Corrected initial values for next and previous in the first and the second edge
Start thrackling!
Adjust degree and possible new firstedge when constructing the second edge
Fixed typo
Only support up to 64 edges at the moment