Revert "Revert "Revert "StateBase no longer use Eigen"""
Revert "Revert "Revert "StateBase no longer use Eigen"""

This reverts commit 96d01e1d246f5aacc8e862ac3a3612784ac4cfa6.

zhouyan/vSMC,zhouyan/vSMC,zhouyan/vSMC,zhouyan/vSMC