- added finder adapters to improve performance on specific platforms
- added Finder::sortByAccessedTime(), Finder::sortByChangedTime(), and Finder::sortByModifiedTime()
- added Countable to Finder
- added support for an array of directories as an argument to Finder::exclude()
- added searching based on the file content via Finder::contains() and Finder::notContains()
- added support for the != operator in the Comparator
- [BC BREAK] filter expressions (used for file name and content) are no more considered as regexps but glob patterns when they are enclosed in '*' or '?'