Old version:
pheader.flag does not contain REPLAY_UNIFORM
RNG: mt19937
distribution: almost-uniform

New version
pheader.flag contains REPLAY_UNIFORM
RNG: mt19937
distribution: uniform

* add bounds checking

* update RNG in replay mode

* replace mtrandom with mt19937

* replace mtrandom with mt19937

* replace mtrandom with mt19937