Turbo-charged counter caches for your Rails app.

Turbo-charged counter caches for your Rails app. Huge improvements over the Rails standard counter caches:Updates counter cache when values change, not just when creating and destroyingSupports counter caches through multiple levels of relationsSupports dynamic column names, making it possible to split up the counter cache for different types of objectsCan keep a running count, or a running totalTested against Ruby 2.3.8, 2.4.7, 2.5.6 and 2.6.4 and against the latest patch releases of Rails 4.2, 5.0, 5.1, 5.2 and 6.0.