0.9.19

Fixed

• The ~MOB sigil now warns about iOS-only and Android-only tags
  (MOB-194). The whitelist check tested the union of
  priv/tags/ios.txt and priv/tags/android.txt, so its iOS-only /
  Android-only branches could never fire: a tag one platform does not render
  compiled silently. A tag on exactly one manifest now warns at compile time,
  naming the platform that has it; a tag on neither still warns that it is not
  in the whitelist. Tags from config :mob, :extra_tags and plugin manifests
  stay silent.
• Anchored is on the Android tag whitelist (MOB-365). The Android bridge
  has rendered :anchored since mob_new 0.5.0 (MOB-189), but
  priv/tags/android.txt did not list it, so with the fix above
  ~MOB(<Anchored>) would have warned that it is iOS-only. It was the only
  tag on one manifest and not the other, so the two manifests now list the
  same tags and no existing ~MOB usage gains a warning in this release.
• iOS: a notification that arrives while the app is open now stays in
  Notification Center (MOB-353). The notification delegate presented
  foreground notifications with a banner and sound only; without
  UNNotificationPresentationOptionList, iOS 14+ does not add them to
  Notification Center, so once the banner timed out the notification was
  gone and could not be tapped later. The change is in ios/mob_nif.m: an
  app gets it by updating mob and rebuilding natively
  (mix mob.deploy --native).