Should proguard keep `SafeParcelable`?

[gabelevi]

The documentation for SafeParcel proguard doesn't keep SafeParcelable. This has been causing some issues for me. I notice in a few places (like here and here) SafeParcelable is used. Configuring proguard to keep SafeParcelable fixes the issues for me. Should the documentation be updated?

[ale5000-git]

@gabelevi
Do you still have problems after this commit? 35969a0