2020-01-02: Minor updates to privacy statement

Today I pushed up a few minor changes to the privacy policy. Nothing major has changed: TimeStory is a local app with no server part and no secret data collection; I don’t track users on the Web site; I don’t share your contact information. But future versions of the app may fetch update information from this Web site (especially if at some point I release a non-App-Store version, which can’t rely on App Store updates), and the site does use Google Fonts, both of which I felt needed explicit clarification.