- adaptive number of particles (unti lock index set in sampler.setup (lock=<batch index>)
 - executors are now set in script_executors.py
 - script_parallel.py replaces all spawn/split/legacy scripts
 - spux.utils.synthesize available, with script_synthesize examples in randomwalk(-replicates)
 - randomwalk is now without replicates, a separate randomwalk-replicates is with replicates
 - plot_config/plot_results scripts updated - please check
 - all data directories renamed to 'datasets'
 - exact.py should contain exact trajectories as well (see randomwalk examples)
 - etc.