Suggestion filtering hides synonyms

I've enabled synonym support in my elasticsearch, which means, for example, end users might search for "trousers" and get back results that do not contain "trousers" but do contain "pants". I think that [getSuggestions](https://github.com/appbaseio/reactivecore/blob/master/src/utils/suggestions.js#L30) is hiding these results. Have you put any thought into this scenario? I think I understand what the filtering here is trying to do, which is handle when the user has changed their search term by the time results come back ( right? ), but in my case it's hiding results I'd still like to see.