Support querystring array parameters. (Thanks to @cdidyk)

This release adds support for respecting cache headers (thanks to @valdemon in #6)

Add gutResponse to the prune callback's argument list.

Resolving a security warning for a dev dependency.

Now compatible with superagent 2.x and 3.x

Breaking Changes

• .pruneParams is now .pruneQuery for clarity
• .pruneOptions is now .pruneHeader for clarity
• No longer wrapping .then since superagent uses real promises since 2.x. As a result, the resolve function passed to .then no longer exposes the generated cache key like it did when using superagent ^1.3.0 with superagent-cache-plugin 1.x (but using .end does still expose the generated cache key)

• Removing a private variable naming collision
• Simplifying code

Thanks to @JaredReisinger

Relative pin to cache-service-cache-module to prevent unnecessary future releases.

Initial release.