Shhh, stay quiet! Rails 5.0 lurks just around the corner and it's a mean beast.
Rails' maintainers, computer scient(-ish)sts, spliced commit DNA merged long ago in hopes of creating a better web framework. The result is Jurrails Park.
The next version of Ruby, 2.4, unifies Fixnum and Bignum into Integer. Have no fear, Rails is already ready with both forward compatibility, backward compatibility and all around compatible compatibility. Int' no Fix' too Big', folks.
One of the first Rails 5.1 features brings the framework appropriately forward. Literally by forwarding count on a Relation to Enumerable when passed a block.