Release Summary for 4.3.40
  Changes to 4.3 after version 4.3.39
  * [HELP-44667: don&#039;t send authz resp on quick hangup (#5919)  Processing the authz request can take longer than processing the  subsequent CHANNEL_DESTROY. This causes the flushing in j5_channels to  occur before the storing of the authorization payload. Since the  channel is gone, the authorization payload isn&#039;t flushed and counts  against the account/reseller limits.    Instead, check the j5_channels ETS table for the authorization  payload on CHANNEL_DESTROY; if none, store an entry with a  destroyed:true flag. If a subsequent authz response is attempted  to be stored, this check will keep it from happening.    Introduce a test for sending CHANNEL_DESTROY followed by authz_req and  ensuring totals remain 0 and no authz_resp is generated.](https://github.com/2600hz/kazoo/commit/f29224d67a2f811718c69cd19ae87ee7e5a55e9d) by James Aimonetti
  * [help-44967: should use the faxDB not generate a new modb when saving new doc (#5913)](https://github.com/2600hz/kazoo/commit/f508282b5ea96cfd1716dc75f89e078b89fde3e8) by Sean Wysor
  * [KAZOO-6115: remove override defaults from assign and keep current when undefined (#5909)](https://github.com/2600hz/kazoo/commit/9fc20ae7cad70fc61b108cb4c9b95ac21a5bbf4a) by bitbashing
 -- 2600Hz Official <packages@2600hz.com>  Mon, 22 Jul 2019 05:23:48 PM +0000
