move fstart/fstop test to SweepStep.trim
use listcomp and genexp
plot_sweep: fix device settings
twisted_plot_sweep: fix device settings
twisted_plot_sweep: exit sooner
copy plot sweep to start trigger example
add trigger to example
fix trim_sweep_plan call
add trigger parameter to sweep
capture trigger data separately
synchronous w/triggers: capture one properly
capture more than one trigger data packet