Merge pull request #82 from ingmar-getzner/master

made the inverover algorithm independent of the weight matrix
Overhaul of TSP classes (Verison 2.0)
Overhaul of TSP classes (Verison 2.0) - Finished
PEP8 warnings fixed
more PEP8 warnings fixed
Import bug fixes
Merge pull request #83 from kiryx/master

Import bug fixes
TSP encoding_type bug fixed in Python wrapper
TSP city selection added. Bugs fixed in tsp_nn
TSP city selection work goes on
work on tsp vehicle routing problem with limited capacity in progress
conflict resolution
tsp_cs work finished
Added the Vehicle Routing Problem (lc) class and the according Python wrapper/added InverOver constructor
Added the Vehicle Routing Problem (lc) class and the according Python wrapper/added InverOver constructor