Mapmatching : add options to add PT indicators to road network.

[qchasserieau]

• number of trips & number of lines
• cumulative frequency or combined headway = 1 / (sum of 1/headway_of_eachline) - average speed of the TC, weighted by number of trips of frequency | this will require a reconstruction algorithm for the times are always weird in GTFS_

[sboivinsystra]

Last item move to :

https://github.com/systragroup/quetzal-network-editor/issues/539