Add stiff problems from DiffEqBenchmarks.jl

Author: YingboMa

src/DiffEqProblemLibrary.jl

@@ -14,7 +14,9 @@ export prob_ode_linear, prob_ode_bigfloatlinear, prob_ode_2Dlinear,
        prob_ode_large2Dlinear, prob_ode_bigfloat2Dlinear, prob_ode_rigidbody,
        prob_ode_2Dlinear_notinplace, prob_ode_vanderpol, prob_ode_vanderpol_stiff,
        prob_ode_lorenz, prob_ode_rober, prob_ode_threebody, prob_ode_mm_linear, prob_ode_pleiades,
-       prob_ode_brusselator_1d, prob_ode_brusselator_2d
+       prob_ode_brusselator_1d, prob_ode_brusselator_2d, prob_ode_orego,
+       prob_ode_hires, prob_ode_pollution, prob_ode_filament
+       SolverDiffEq, filament_prob
 
  #SDE Example Problems
  export prob_sde_wave, prob_sde_linear, prob_sde_cubic, prob_sde_2Dlinear, prob_sde_lorenz,