Commit 7543e33 removed attribute autocomplete="off" on input

Hello,

I just switched to this fork and I notice that the attribute `autocomplete="off"` isn't added anymore to the input field since commit 7543e33. As a consequence I get the browser suggestions on top of the ones provided by this library.

I cannot find any open issues about that so I'm probably missing something but I can't figure out what.

https://github.com/corejavascript/typeahead.js/commit/7543e33e68463495272c47acdb58858c603f92a5#diff-612e04832149bb9432629c576beb2e07L223