Multi value rendered as one item in classes.

First of thanks for the great module, a lot more usable than the previous isotope views.

I noticed that multi value fields like tags or when using a field to provide classes to combine with bootstrap to make the grid play nice, discussed here #2709103 → are rendered together.
In the case of a field containing classes the items are connected because spaces are replaced by a hyphen.

Example

A field containing col-xs-12 col-sm-4 will turn into col-xs-12-col-sm-4

or with tags tag-1 tag-2 will turn into tag-1-tag2

So when a multi value field is rendered in the same row, tags or classes are merged by a hyphen, which prevent them from functioning. If you don't select render in same row a view will create duplicate results. Setting the query settings to distinct does not prevent duplication.

I think It would be great if multi value fields could be used without being merged by a hyphen or result in duplication.