CHANGELOG
=========
2.1.0
-----
* 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 '?'
