Nocache Middleware

The `nocache` package is an Express/Connect middleware designed to aggressively disable client-side caching by setting specific HTTP response headers. It is currently at stable version 4.0.0. As a component of the Helmet.js suite, its release cadence is generally tied to Helmet's, focusing on stability and security rather than frequent feature additions, with major version updates typically aligning with Node.js EOLs or significant breaking changes. Its primary differentiator is its simplicity and integration within the broader Helmet.js ecosystem, providing a straightforward, opinionated way to ensure clients always request fresh resources. This is crucial for applications sensitive to stale data, enforcing immediate updates, or handling sensitive information that should never reside in a browser cache. It effectively sets `Cache-Control`, `Expires`, and `Surrogate-Control` headers.