local adapter timestamp for directories
Added support for creating directories with options.
bug fix to NullAdapter test, where the wrong method name was being used
Fixed #171: Memcached returns false on not found, not null.
Recursion did not fully work on Dropbox Adapter
Added stream and update functions to File handler
Update composer.json
Removed 5.3 from travis
Ensure Local has checks weather it's a file, not a directory
Fixed #188: fixed empty path prefix
Added test for 0 dirname
Adapter/Ftp::deleteDir now returns boolean
Implemented HttpAdapter with guzzle