module Sprockets::Digest

configuration change to the `Environment` object.
It would be wise to increment this value anytime you make a

into the `Context`.
impossible to know when any custom helpers change that you mix
will take care of expiring the cache for you. However, its
Sprockets is able to track most file and directory changes and

expiring all asset caches.
The `Environment#version` is a custom value used for manually

def version
  @version
end