Incorrect generators for S5 subgroups

[michaelttpearce]

Some of the generators fail to generate the full group. For example, C4.0 only generates a subgroup of order 2.

sn-grok/sngrok/proper_subgroups.py

Line 97 in cb0673d

[(1, 0, 3, 2, 4)],

[dashstander]

Good catch, that's supposed to be a 4-cycle.