If ratings are not required, the total rating count was counting all
reviews which skewed the average rating. In other words, reviews with
no rating were counted as a “zero” rating in the average rating
calculation. This bug was introduced in
83a457b29c which provided a fix for #6839.
This change introduces a new product method `get_review_count()` which
can be used to accurately calculate the total number of reviews for a
product. Some instances of `get_rating_count()` were replaced with
`get_review_count()` where appropriate. Additionally, the
`single-product/rating.php` template was adjusted to display the
correct number of customer reviews and ratings in rich snippets. I’ve
also included the `bestRating` rich snippet detailed
[here](http://schema.org/AggregateRating). The version number was
adjusted to 2.3.2 on that template as I think this is a larger change.
7eaae2d561