Fix typo in spe.memoize event_factor_to_event -> event_factor #118
Description
https://github.com/probcomp/sppl/blob/efff34fb3d3703247dd7001c36970069c5ac3825/src/spe.py#L53-L54
Also change memo is False to memo in [False, None]
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https://github.com/probcomp/sppl/blob/efff34fb3d3703247dd7001c36970069c5ac3825/src/spe.py#L53-L54
Also change memo is False to memo in [False, None]