RoamCode v4.0.41

Fixed

• Say whether a test notification was actually delivered. The Node answers the same way whether a push
  reached a device or nobody at all, and the app discarded that answer — so "Send test notification" reported
  success even when the channel was completely dead, which is exactly the case someone is looking at when
  they say notifications never arrive. It now reports how many devices received it, or why none did.
• Stop discarding push-delivery rejections. Only "gone" (404/410) responses were ever examined; every other
  rejection — a push service refusing the VAPID credentials with 403, a 400, a throttling 429 — was dropped
  without a log line or a report, leaving no evidence anywhere on the Node. Rejections are now logged with
  their status and surfaced to the caller, while a subscription that is merely rejected is still kept.

Full changelog: v4.0.40...v4.0.41