Using gzip-based compression over lzstring using the fflate library: fflate. This reduces the amount of data transferred, and makes posthog servers respond faster (requires posthog 1.19.0). https://github.com/PostHog/posthog/issues/2560
Support last touch $referrer and $referring_domain user properties https://github.com/PostHog/posthog-js/pull/139
Publish a ES dist file https://github.com/PostHog/posthog-js/pull/157
Publish a react integration for feature flags https://github.com/PostHog/posthog-js/pull/154