Point release on top of v1.6.3 with one behavioural change.
Heartbeat ping removed
The anonymous install heartbeat introduced in v1.6.3 (a once-per-day POST of a random UUIDv4 to helios-lidar.org) is gone. The card no longer emits any beacon, and the helios-anon-stats config key is no longer read. Anyone setting it explicitly to false can leave the line in their YAML (it's now a no-op) or remove it.
Install analytics are now derived from public GitHub Releases download counts on the helios-lidar.org landing page, which keeps the same informational value without a client-side ping.
No other functional changes vs v1.6.3. If you're on v1.6.3, the upgrade is silent: the card behaves identically apart from the missing daily POST.