TakeStep make rng non-static
MetropolisTest: make rng non-static
resolve conflict due to mandatory constructor argument
Merge remote-tracking branch 'origin/master' into rng_nonstatic
add wrapping for metropolis
add wrapping for takestep
Merge pull request #20 from kjs73/rng_nonstatic

Make random number generators in TakeStep and MetropolisTest non-static