Purpose of this asset
The main part of this asset is a C# script (and some supporting scripts) to enable Rigidbody Parenting.
Normally, a Rigidbody ignores parent Rigidbodies in the scene hierarchy.
When a normal parent Rigidbody is moved by Unity internal physics, then child Rigidbodies are not moved with it.
This asset solves that problem by making child Rigidbodies being simulated by Unity internal physics fully relative to the parent Rigidbody.
So as a result, child Rigidbodies will move with the parent Rigidbody additionally to their own relative moves.
