Sparse move

Reference issue

Fixes #2238 (closed)

What does this implement/fix?

Optimized SparseMatrix move constructor and move assignment to call swap directly. Adds SparseMatrix move and assignment constructors for arguments that inherit from SparseCompressedBase. These don't always result in a cheap copy, but they use existing markAsRValue() logic to enable optimizations if conditions are right.

And vectors.

Additional information