message: Do not truncate autocompleted users in composer
  so that disambiguation is possible at a glance.
  Fixes
diff: @@ -158,7 +158,7 @@ export default class UserProvider extends AutocompleteProvider {
  }
  renderCompletions(completions: [React.Component]): ?React.Component {
  - return <div className="mx_Autocomplete_Completion_container_pill mx_Autocomplete_Completion_container_truncate">
  + return <div className="mx_Autocomplete_Completion_container_pill">
  { completions }
  </div>;
  }
  