Change of 2 function names in trajectory.

bench/array_memory_order/multiple_sim.jl

bench/array_memory_order/read_random_state_trajectory.jl

bench/array_memory_order/read_trajectory.jl

bench/pygmalion/multiple_long_sim_er.jl

bench/pygmalion/read_random_state_trajectory.jl

bench/pygmalion/read_trajectory_er.jl

core/MarkovProcesses.jl

core/model.jl

core/trajectory.jl

tests/run_unit.jl

tests/unit/dist_lp.jl

tests/unit/dist_lp_var.jl

tests/unit/is_always_bounded_sir.jl

tests/unit/length_obs_var.jl