Create a method Line#sign. This method returns the "final sign" based on Line direction.
Create a namespace for spec environment helpers.
Use SpecEnv in CustomHelpers.
Refactor Authentication specs.
Refactor Client specs.
Create a helper to match regular expressions.
Refactor Connection specs.
Refactor LineBuses specs.
Refactor LineStops specs.
Refactor Search specs.
Create a new method in Line object that returns the "trip_id" int the GTFS format.