renamed sampler to sampler_RW_multinomial
renamed sampler to sampler_RW_multinomial

nxdao2000/nimble,nxdao2000/nimble,nxdao2000/nimble,nxdao2000/nimble,nimble-dev/nimble,nimble-dev/nimble,nimble-dev/nimble,NLMichaud/nimble,nimble-dev/nimble,NLMichaud/nimble,nimble-dev/nimble,NLMichaud/nimble,NLMichaud/nimble