Add 'auto-discover' multi-graph mode.
Merge remote-tracking branch 'upstream/master'
Change KV7 tripid's to reflect GTFS
Add url to exception when graph builder URL fails

This is a huge help when the URL testing fails and there are multiple GTFS url's in the config file.
Improve exception message when graph builder URL fails
Merge pull request #1066 from skywave/master

Better error messages for the URL fetching in Graph-Builder
Multi-graph auto-discovery: handle root graph.

Always prevent loading twice the same graph in mixed configured and auto-discovery mode.
Add Comments to RoutingResource / RoutinRequest
comments on Lombok use in RoutingRequest
comment
format comment and rename method
let's call it streetSpeed since we have StreetEdges
Add Javadoc and comments, use more common spelling of Euclidean
clarify comments
only add transfer penalty when offboard and transit is necessary
merge mandatory walking and alighted local cases in default heuristic
fix incorrect comments, split out street and transit terms in cost
add factory to trivial remaining weight heuristic
remove component annotations
log walk limit doubling