[news] Yii Strings 2.2

Minor version of Yii Strings package was released.

In this release:

• Add CombinedRegexp and MemoizedCombinedRegexp classes optimizes matching of multiple regular expressions.
• Add methods StringHelper::trim(), StringHelper::ltrim() and StringHelper::rtrim().
• Add $strict parameter to Inflector::toSnakeCase() method.
• Raise required PHP version to 8.0.
• Using fully-qualified function calls to improve performance.
• Make minor refactoring.