changed behavior of platform.edge. It was previously true only for desktop Windows version of the old Edge based on EdgeHtml rendering engine. Android and iOs versions of Edge showed platform.edge:false. Since MS is ditching EdgeHtml in favor of Chromium from desktop version, we reflect the change now and all Edge browsers on any OS now return platform.edge:true. You can still detect the old edge by querying the rendering engine platform.edgeHtml.
behavior of all other browsers likely slightly changed too due to fixes in detection of edge, firefox, opera. Therefore platform.safari & platform.chrome should show less false positives.
platform.dev is now undefined in browsers because Chrome removed the way we could use to detect Dev Tools.
platform.formfactor now includes hybrid which is a touch device with a mouse - like Surface Pro (tablet with detachable keyboard) or Surface laptop (laptop with touchscreen)

Firefox on Android no longer shows platform.gecko:true. Instead it is platform.blink:true.
platform.firefox is now detected by both Firefox/ and FxiOS/.
platform.opera is now detected by both Opera/ and OPR/.
platform.edge Is now true in all versions of Edge on any OS.
platform.safari now has less false positives due to improvements in detecting other browsers.
platform.gecko now returns true on android since Firefox now compiles Gecko for their Android Firefox.
platform.opera is no longer falsely detected (for example on tizen's browser or instad of Samsung Browser)
platform.gamepar in older chromium browsers