add method for retrieving the internal edges for a route via sumolib (trac #1322)

[behrisch]

Since version 0.19.0 all internal lanes connecting the same edges are grouped into a single edge. This makes the sequence of internal edges for a route fully determined.

Migrated from http://sumo.dlr.de/ticket/1322

{
    "status": "assigned", 
    "changetime": "2017-08-29T14:19:27Z", 
    "description": "Since version 0.19.0 all internal lanes connecting the same edges are grouped into a single edge. This makes the sequence of internal edges for a route fully determined.", 
    "reporter": "namdre", 
    "cc": "", 
    "resolution": "", 
    "_ts": "1504016367094520", 
    "component": "tools (python)", 
    "summary": "add method for retrieving the internal edges for a route via sumolib", 
    "priority": "major", 
    "keywords": "", 
    "time": "2014-06-05T08:23:33Z", 
    "milestone": "1.1.0", 
    "owner": "mahei", 
    "type": "enhancement"
}

[behrisch]

• @namdre changed owner from "" to "mahei"
• @namdre changed status from "new" to "assigned"

[behrisch]

@namdre commented:

except for multi-lane turns where these edges are disaggregated

[namdre]

@namdre commented:

except for multi-lane turns where these edges are disaggregated

Even those are joined since 1.9.0 so the sequence of edges is unambiguous