3.2.0

• Previously if the required score was set to 0 (in an attempt to not i actually block anything), the default of 0.5 would be used instead. This was due to incorrect logic when checking for None values. This changes fixes this handling so that a required score of 0 may be set.
• The docs state that "Validation is passed if the score value returned by Google is greater than or equal to required score." However the code was actually checking for a score greater than required, not greater than or equal to. This change fixes the logic to match the stated behavior.