Add a Memory Reader that owns the buffer via std::move #375
Description
Discussed in PR #373 as maybe useful.
Would be an alternative to the current MemoryReader that accesses a buffer owned by an external source.
Could provide additional guarantees of no changes to memory state when reading from a buffer that would be immediately disposed of after reading (I think a common use case).
Possibility of improved semantics in code from MemoryReader in some cases, but this idea hasn't been fully explored.