Use boost mixmax specifically

Author: andrjohns

test/unit/math/fwd/prob/categorical_test.cpp

@@ -1,6 +1,6 @@
 #include <stan/math/fwd.hpp>
 #include <gtest/gtest.h>
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/distributions.hpp>
 #include <vector>
 

test/unit/math/fwd/prob/dirichlet_test.cpp

@@ -1,6 +1,6 @@
 #include <stan/math/fwd.hpp>
 #include <gtest/gtest.h>
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/distributions.hpp>
 
 TEST(ProbDistributions, fvar_double) {

test/unit/math/fwd/prob/inv_wishart_test.cpp

@@ -1,7 +1,7 @@
 #include <stan/math/fwd.hpp>
 #include <gtest/gtest.h>
 
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/distributions.hpp>
 #include <boost/math/special_functions/digamma.hpp>
 

test/unit/math/fwd/prob/lkj_corr_test.cpp

@@ -1,6 +1,6 @@
 #include <stan/math/fwd.hpp>
 #include <gtest/gtest.h>
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/distributions.hpp>
 
 TEST(ProbDistributionsLkjCorr, fvar_double) {

test/unit/math/fwd/prob/multi_normal_cholesky_test.cpp

@@ -1,6 +1,6 @@
 #include <stan/math/fwd.hpp>
 #include <gtest/gtest.h>
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/distributions.hpp>
 
 TEST(ProbDistributionsMultiNormalCholesky, fvar_double) {

test/unit/math/fwd/prob/multi_normal_test.cpp

@@ -1,6 +1,6 @@
 #include <stan/math/fwd.hpp>
 #include <gtest/gtest.h>
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/distributions.hpp>
 
 TEST(ProbDistributionsMultiNormal, fvar_double) {

test/unit/math/fwd/prob/multi_student_t_test.cpp

@@ -1,6 +1,6 @@
 #include <stan/math/fwd.hpp>
 #include <gtest/gtest.h>
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/distributions.hpp>
 
 TEST(ProbDistributionsMultiStudentT, fvar_double) {

test/unit/math/fwd/prob/multinomial_test.cpp

@@ -1,6 +1,6 @@
 #include <stan/math/fwd.hpp>
 #include <gtest/gtest.h>
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/distributions.hpp>
 #include <vector>
 

test/unit/math/fwd/prob/wishart_test.cpp

@@ -1,6 +1,6 @@
 #include <stan/math/fwd.hpp>
 #include <gtest/gtest.h>
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/special_functions/digamma.hpp>
 #include <boost/math/distributions.hpp>
 

test/unit/math/mix/prob/categorical_test.cpp

@@ -1,6 +1,6 @@
 #include <stan/math/mix.hpp>
 #include <gtest/gtest.h>
-#include <boost/random/mersenne_twister.hpp>
+#include <boost/random/mixmax.hpp>
 #include <boost/math/distributions.hpp>
 #include <vector>