Consider adding use of Google Analytics to our privacy policy

As [noted by Twitter user gendalus](https://twitter.com/gendalus/status/1061951384306753536), we do not directly mention the use of Google Analytics in our Privacy Policy.

@dwhly has suggested adding to the section called Sharing Information with Third Parties, under Platform Data Analytics Service Providers.

"We use analytics providers to gather analytics related data reporting capabilities to monitor visitors and usage."

could become

"We use analytics providers **such as Google Analytics (with IP anonymization enabled)** to gather analytics related data reporting capabilities to monitor visitors and usage."