mutable_view keeps a reference to the tensor data, without need of VectorView objects.
SharedPtr is now a private class of RefPoitner.
Removed rw_reference() and added a single method references() to RefPointer::pointer
Simplify the reference system in RefPointer, now that R/W references are not needed.
Enforce the policy that mutable_view cannot be on the right-hand-side of any expression and that it can only be assigned simple views or tensors.
Changes in the documentation to better explain the behavior of RefPointer.
Try to clarify the behavior of mutable references