* added support for connecting to Redis Sentinel clusters
* added argument `$prefix` to `AdapterInterface::clear()`
* improved `RedisTagAwareAdapter` to support Redis server >= 2.8 and up to 4B items per tag
* added `TagAwareMarshaller` for optimized data storage when using `AbstractTagAwareAdapter`
* added `DeflateMarshaller` to compress serialized values
* removed support for phpredis 4 `compression`
* [BC BREAK] `RedisTagAwareAdapter` is not compatible with `RedisCluster` from `Predis` anymore, use `phpredis` instead
* Marked the `CacheDataCollector` class as `@final`.
4.3.0
-----
* removed `psr/simple-cache` dependency, run `composer require psr/simple-cache` if you need it
* deprecated all PSR-16 adapters, use `Psr16Cache` or `Symfony\Contracts\Cache\CacheInterface` implementations instead
* deprecated `SimpleCacheAdapter`, use `Psr16Adapter` instead
4.2.0
-----
* added support for connecting to Redis clusters via DSN
* added support for configuring multiple Memcached servers via DSN
* added `MarshallerInterface` and `DefaultMarshaller` to allow changing the serializer and provide one that automatically uses igbinary when available
* implemented `CacheInterface`, which provides stampede protection via probabilistic early expiration and should become the preferred way to use a cache
* added sub-second expiry accuracy for backends that support it
* added support for phpredis 4 `compression` and `tcp_keepalive` options
* added automatic table creation when using Doctrine DBAL with PDO-based backends
* throw `LogicException` when `CacheItem::tag()` is called on an item coming from a non tag-aware pool
* deprecated `CacheItem::getPreviousTags()`, use `CacheItem::getMetadata()` instead
* deprecated the `AbstractAdapter::unserialize()` and `AbstractCache::unserialize()` methods
* added `CacheCollectorPass` (originally in `FrameworkBundle`)
* added `CachePoolClearerPass` (originally in `FrameworkBundle`)
* added `CachePoolPass` (originally in `FrameworkBundle`)
* added `CachePoolPrunerPass` (originally in `FrameworkBundle`)
