Float comparator does not handle inf correctly

[wanderingWitch]

Noticed this a while ago, sorry for delay.
ex:

a1 = {'a': [1.0, 2.0, 3.0, 4.0]}
a2 = {'a': [1.0, 2.0, 3.0, float('inf')]}

dictdiffer.diff does not return any differences for these two dictionaries.