Merge branch 'open_transport_stuff' into 'gui-transport'

src/main/java/ch/hepia/api/transport/Connection.java

src/main/java/ch/hepia/api/transport/Coordinates.java

src/main/java/ch/hepia/api/transport/Journey.java

src/main/java/ch/hepia/api/transport/Location.java

src/main/java/ch/hepia/api/transport/Prognosis.java

src/main/java/ch/hepia/api/transport/Section.java

src/main/java/ch/hepia/api/transport/Service.java

src/main/java/ch/hepia/api/transport/Stop.java