tracker-node@3.3.0

🔥 Major updates

• Added Profile identification via a new identify(ip, userAgent, profileId, traits?) method.
  You can now link a visitor's anonymous profile to your own user ID (e.g. after they log in), so their pre-login activity is attributed to the identified profile. You can also pass traits - key / value metadata like email, plan or signup date - which are displayed on the user's profile in your dashboard. Traits are merged per key; pass null to remove one.
  Note: unlike the browser tracker, this does not set a default profileId for subsequent calls - keep passing profileId per track / trackPageView call. Learn more.

🙂 Minor changes

• Updated dependencies.