| x_{t-1\} = C_k) ... q_n(x_t | x_{t-1\} = C_k)`}
	/>
cumulative result (omitting logarithms):
_0_cumulative(x_t | x_0 = C_0)    ...  q_n_cumulative(x_t | x_0 = C_0)
          .               .                          .
          .                        .                 .
          .                               .          .
q_0_cumulative(x_t | x_0 = C_{k-1\}) ... q_n_cumulative(x_t | x_0 = C_{k-1\})`}
	/>


Returns the log probabilities o