Changing `this.watcher()` to be `cluster.Master` centric & updating `this.register()`, updating docs
Removing `Cache-Control` header from default config, removed recent additions to `pass()` & distributed them to `this.register()` & this.unregister()`, separated concerns of `this.stale()`, fixing `this.request()` to send a 304 when appropriate
Made `this.watcher()` DRY
Fixing typos
Updating `this.respond()`, updated docs
Fixing `this.handler()` to only update LRU cache when Client is making a GET
Updated `this.proxy()` to utilize only `this.respond()`, updated `this.request()` to only utilize `this.watch()` for LRU, fixes #126, fixes #139

Minor changes

Updating docs
Merge pull request #141 from avoidwork/edge

Major fixes, API change