CHANGELOG
=========
4.0.0
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* the first argument of the `ExpressionLanguage` constructor must be an instance
of `CacheItemPoolInterface`
* removed the `ArrayParserCache` and `ParserCacheAdapter` classes
* removed the `ParserCacheInterface`
2.6.0
* Added ExpressionFunction and ExpressionFunctionProviderInterface
2.4.0
* added the component