v1 (2015-12)

Allow options in the form --flag or --name=value before command name
Fix: input Ask() failed to handle io.EOF, which can happen when input is not io.Stdin, but eg file or network
Added c.NewFlag(..) to command, because c.AddOption(clif.NewOption(...).IsFlag()) is too tedious
Added table rendering, via output.Table(header []string) *Table

v0