v0.8.0

Changelog

• @killdash9 adds [multiple] res.write(str) + res.end() support through a content accumulator. This has been confirmed working with the existing Buffer concept.
• Adds official compression gzip support (with tests). Previously the compression lib would mutate the headers once injected in the cache, creating a failed later cache-hit... now uses Object.assign() (available in Node v4.0+) to store clean copy. Bring on the compressed API requests!