Change version of onebusaway-gtfs to 1.3.1.
Add new classes to hold the transfer specificity information.
Make it possible to import the transfer specificity information. Timed
transfers are not handled correct yet. Other transfers don't work in
planning yet.
Make functions that were created to be backwards compatible with some
unit-test deprecated.
Also check parent stops when checking for a transfer. Refactored code a
bit.
Fix old unit-tests
Prevent multiple TimedTransferEdges.
Save stop instead of vertex in state data
Save previous Trip in state data (TODO: PatternInterlineDwell)
Save previous trip in state data (rest)
Remove comments from Pre{Alight/Board}Edge
Save current stop in pre board/alight edge
Prevent forbidden and min_time transfers for TableTripPattern
Add transfer rules to frequency alight/board edges
Add preferred and timed transfer support to TransitBoardAlight edge
Created SpecificTransfer unit test and fixed a bug
Created StopTransfer unit test
Created TransferTable unit test
Remove unnecessary whitespace
Updated and extended pattern hop factory unit test