added asserts in ..._calc_cc_... and corrected if-statement in ..._create_walk
fixed initialization of distancemap ..._create_walk and fixed potential dereferencing of null-pointer ..._makescaffold
added color for scaffold-state in print function
added color for GIS_REPEAT. fixed bug in ..._makescaffold
added checks for polymorphic and repeated nodes
replaced BFS in ..._makescaffold with ..._calc_cc_and_terminals. works like before (tested it)
Merge branch 'master' of https://github.com/dorleosterode/gt-scaffold