Upstream sync

db/migrate/20200612121539_add_guardian_email_to_appearance_releases.rb

@@ -0,0 +1,5 @@
+class AddGuardianEmailToAppearanceReleases < ActiveRecord::Migration[6.0]
+  def change
+    add_column :appearance_releases, :guardian_email, :string
+  end
+end

db/migrate/20200615131722_remove_broadcast_id_from_zoom_meetings.rb

@@ -0,0 +1,5 @@
+class RemoveBroadcastIdFromZoomMeetings < ActiveRecord::Migration[6.0]
+  def change
+    remove_column :zoom_meetings, :broadcast_id
+  end
+end