Retain search terms on provider change

This is a great plugin – thanks for your work on it. Just something for you to consider in terms of possible improvement: I notice that when we switch tab (e.g. from Unsplash to Pixabay) the search input is cleared. I would find it useful if the terms were retained in there and the current search was reapplied at the new provider.

(This might have been mentioned before but I did a quick search and didn’t see it!)