I should. I'm not too familiar with the process so far, but I'll find some time for it. These functions are indeed generally sound (also for `Rc`), as any valu

I should. I'm not too familiar with the process so far, but I'll find some time for it. These functions are indeed generally sound (also for `Rc`), as any value that cares would be `!Unpin`, which would still bar access to `&mut T`. `make_mut_pinned` also shouldn't cause too much confusion, as availability of `Clone` would have to be declared explicitly just about everywhere that's relevant. They can be implemented as very thin wrappers around their non-pinning equivalents, with only a few `unsafe` operations to make the types fit.