init

backup
rubyインターフェースでの実装に切り替え
日付フォーマット変更
backup
order by counts
implemenets keep days
file check
added description
new: g:unite_mfu#max_return_nums option
ignore to write the count files, when the count files itselves are open
Merge branch 'master' of github.com:hykw/unite-mfu