Initialization of street sections (instances of the current class StreetSection)

[vvoovv]

Will it be possible to do the following before setting the number of lanes and calculating the width:

• assign attributes start and end for each street section
• group the neighbor street sections into a roadway
• group multiple roadways into a street (grouping a single roadway into a street is straightforward)

This is necessary for https://github.com/prochitecture/pml/issues/16. section, roadway, street are defined in https://github.com/prochitecture/pml/issues/16

[polarkernel]

Will it be possible to do the following before setting the number of lanes and calculating the width:

As far as I currently understand your idea, this should be possible on the basis of the currently used WaySection or StreetSection classes.