here we should add `assumesPageview`. the general idea is that most of these providers assume an initial "page view" has occured when their library loads on the page, and in that case we don't want to accidentally fire two of them at once. (check out [this thread](https://github.com/segmentio/analytics.js/issues/153) for more info)

if you ever don't know, its usually safe to assume that they assume a pageview