more doc in cese.rst, logic to get the analytic solution of the 1D sod tube problem
more doc in cese.rst, logic to get the analytic solution of the 1D sod tube problem

solvcon/solvcon,solvcon/solvcon,yungyuc/solvcon,solvcon/solvcon,yungyuc/solvcon,solvcon/solvcon,yungyuc/solvcon,solvcon/solvcon,solvcon/solvcon,yungyuc/solvcon,yungyuc/solvcon,yungyuc/solvcon