Fix action sampling bug when there's a uni-dimensional control state (to address Issue #86) #90
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See #86: when doing stochastic action sampling (
action_selection == "deterministic"
incontrol.sample_action()
), and there is a uni-dimensional control state (num_controls[f] == 1
for somef
), then there was an error inutils.sample()
due to the inability to sample from an unsized array.