* Use [node-]redis as a direct dependency
* Extract Redis client creation to its own module
* Attach extensive logging in the Redis client creation module
* Allow the rate limiter to pass requests when Redis is disconnected
* Update rate-limit-redis
* Default error input to empty object for formatRedisError method
* Provide a name for the rate limiter's Redis client
* Include redis-mock, exclude ioredis/ioredis-mock
* Remove unused RedisAccessor#exists method
* Switch RedisAccessor to use redis/redis-mock
* Provide a name for logging on the Redis page cache
* Remove extraneous trailing space from Redis logging prefix
Our updated use of console.* will already be adding a space after the prefix
* Replace ioredis-mock with redis-mock in tests
* Revert removal of ioredis dependency
* Bind Redis client to async promisified methods
* Extract former RedisAccessor constructor tests to new create-client tests
* Update RedisAccessor tests to work with the callback-based redis client
* Handle formatting Redis errors (or not) with more resiliency
* Explicitly set the Redis database number used for rate limiting
* Switch to using ioredis as the Redis client for rate limiting
* Install ioredis-mock as a primary dependency
* Create a Redis BasicAccessor class and tests
* Switch rendered page caching to use Redis for storage
* Add support for additional Redis SET options like TTLs
* Remove currently unused methods
* Rename redis-accessors/basic to redis-accessor and remove extra fluff
* Change default behavior for cache setting to throw if an error occurs
Add option allowSetFailures to facilitate graceful failures
* Allow SET failures to fail gracefully for the rendered page cache
* Remove as-yet unneeded serialization options from RedisAccessor
* Move Redis client construction into RedisAccessor constructor, just pass in databaseNumber as option
* Remove rendered-page-cache in favor of direct RedisAccessor use
* Add tests for RedisAccessor constructor param validations
* Eliminate one roundtrip to Redis for the cached HTML existence check
Are we fast yet?
* Set a rendered page cache TTL of 24 hours
