Added parameter  in Factory and Validator to use the Validator::make()
Renaming Section.php file
Renaming in a separate commit to retain git history
Cache tags feature
Changes cache Sections to Tags, and allows multiple tags per cache.
Make TaggedCache implement StoreInterface
This way, a tagged cache can be passed to a class that expects a StoreInterface, and doesn't have to know that it is dealing with a tagged cache.
Tag-related operations can be handled outside the class.
Change the name of the Tags class to TagSet
Change visiblity of properties on pluralizer.
Fix issue in Str::finish() with multicharacter cap.
Version typo
Merge pull request #2602 from GrahamCampbell/master

Version typo
Simplify Str::is() by removing useless special handling of '/'
added another test.
Merge branch 'str_is' of https://github.com/vlakoff/framework into str-is
Adding Str::is tests.
Remove untrue change log.
Removing old change log.
Added more tests for routing. Fixed domain group bug.
added clone functionality
Make extend() return manager instance.
Merge pull request #2609 from franzliedke/patch-14

Make extend() return manager instance.
Fix conflicts and merge.