Major Refactoring

[![Coverage Status](https://coveralls.io/repos/tedivm/TedivmStashBundle/badge.png?branch=refactor)](https://coveralls.io/r/tedivm/TedivmStashBundle?branch= refactor)

This is a major refactoring meant to improve test coverage, increase efficiency, and ease the general use of this bundle.

* Testing has been completely expanded, with the goal of getting over 95% coverage.
* Numerous bugs and consistency issues have been resolved.
* "CacheLogger" has been renamed to "CacheTracker" to distinguish between it and the PSR Logger items.
* Handlers have been renamed to Drivers to match upstream labeling.
* Created a new CacheItem the replaces the functionality of the CacheObjectWrapper. The CacheItem is an extension of the Stash\Item, but adds the Tracker abilities where needed.
* CacheService more efficiently wraps the Pool objects.
* Updated to new dev version of Stash to take advantage of upstream changes in testing and functionality.