Old documents are returned when new document is inserted

[ericdepotter]

When documents are changed after the search has initialized, these changes are lost when a new document is inserted.

I believe this is caused by https://github.com/matteodem/meteor-easy-search/blob/master/packages/easysearch:core/lib/core/search-collection.js#L236 which publishes the documents as they were at the moment when the search was initialized.