Convert Chtimes to a setstat call for reuse with other stat setting functions.
Merge commit 'ecc928e8ba95a479858406dd87029a55cbd3262b'
Slightly refactor Chtimes and add support for other variants of setstat.
Remove old Chtimes implementation.
Implement aliases to client methods in an individual File.
Fix a few various typecasting bugs.
Refactor stat functions to look more like Go's original. Also allows for access to fields we can access from SFTP but do not conform to os.FileInfo.
Refactored attribute test to deal with new types.
Refactor to make vars and receivers consistent with types used.
Switch from fi to fs for type clarity.
Clarified documentation on FileStat to indicate why it is exported.
Merge pull request #13 from appriss/master

Beef up stat support.