Change in this version: - Add Node and Stop exceptions to build a Route object.
0.0.7
Changes in this version: - Change in transport network results to show node id in int format - utf-8 encoding in writes methods - Fix network plotting method to show return stops view - Update __init__ city
0.0.6
Changes in this version: - fix of failure in network plot due to changes in the id of the nodes for being integer
0.0.5
Changes in this version: - Nodes id and Zones id must be a integer
0.0.4
Changes in this version: - Implementation of circular route in optimization process
0.0.3
Changes in this version: - Added method `build_from_content`