Adds the ability to persist the session in PlayerPrefs instead of the file storage on tvOS and WebGL. On those platforms, access to the persistent file storage is limited so we need to make use of the PlayerPrefs storage.
I kept the file storage on other platforms for backwards compatibility. It'd be better to use PlayerPrefs everywhere, but that would mean that the session created using previous tracker versions would be reset.
Issue #76
Adds the ability to persist the session in PlayerPrefs instead of the file storage on tvOS and WebGL. On those platforms, access to the persistent file storage is limited so we need to make use of the PlayerPrefs storage.
I kept the file storage on other platforms for backwards compatibility. It'd be better to use PlayerPrefs everywhere, but that would mean that the session created using previous tracker versions would be reset.