Re-enable option to skip linking of stops to parent stops
Specific error for case where graph could not be found (due to no graph at startup or due to preEvict = true when registering)
Merge pull request #1239 from goabout/fix_tests

Fix tests
Merge pull request #1241 from jkoelewijn/noGraphErrorCode

Add error code for when no graph could be found
Test that neither StreetTransitLink chaining nor StationStopEdge chaining is allowed
Fix path parser
Merge pull request #1246 from goabout/path_parser

Fix the long distance path parser
only check port number when supplied or when starting a server
Always display GTFS-rt alerts without a TimeRange

According to the spec:
"If missing, the alert will be shown as long as it appears in the feed.
If multiple ranges are given, the alert will be shown during all of
them."