Dataset comparison
Hi, I am looking for a way how to compare two datasets produced by two distinct runs and notify me via email if they differ. To be more concrete, I want to set me scraper actor to check some products on a site periodically (each day), compare its output with the output from previous run and if the sets of products (for example their IDs) differ, notify me via email. It should work in similar manner as Jakub's Content Checker (https://console.apify.com/actors/ctMjXHGFjGPwBzCrq). I believe that I somehow need to connect different actors togather... Please, can you point me to some tutorial, docs, or thread hereby where this workflow is discussed? Since already read many Apify blogs and documentation, but was unsuccessful in finding the solution, I ask you 
