Add `Packet4ui`, `Packet8ui`, and `Packet4ul` to the `SSE`/`AVX` `PacketMath.h` headers
Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
For more information go to http://eigen.tuxfamily.org/.
For pull request, bug reports, and feature requests, go to https://gitlab.com/libeigen/eigen.