v1.1b2

TripKit's 'Configs' exposed a factory to initialize Co2Preferences that helps specify CO2 of some transports. Co2Preferences has a default implementation namely DefaultCo2Preferences that stores and queries CO2 preferences via SharedPreferences. However, if you aren't satisfied with it, you can spawn a new implementation. For usage of DefaultCo2Preferences, please refer to this DefaultCo2PreferencesTest.