Release Summary for 4.2.21
  Changes to 4.2 after version 4.2.20
  * [HELP-35943: log non-jobj and return default (#4707)  * HELP-35943: log non-jobj and return default    * HELP-35943: update the corresponding test](https://github.com/2600hz/kazoo/commit/7eb60aafed19fefeb5c8320415febf3d1bf2c851) by bitbashing
  * [lets crash on baduuid and advance the queue (#4700)](https://github.com/2600hz/kazoo/commit/38f79af84b2a8da712785d620d3a3c6a4e3fdf15) by James Aimonetti
  * [Help 35959 4.2 (#4706)  * HELP-35959: when the callflow module calls stop and the channel is destroyed, stop the cf_exe at that time    * HELP-35959: return the figlet for API aliveness](https://github.com/2600hz/kazoo/commit/1e30c51288ecf534322492176af349967b27b881) by bitbashing
  * [use listing_by_timestamp to get all account&#039;s vm messages (#4703)](https://github.com/2600hz/kazoo/commit/475c8ae7dc23a1cf559763c38f6365e99431837a) by icehess
  * [avoid catch in get_first_defined (#4698) (#4705)](https://github.com/2600hz/kazoo/commit/f76b9655be8b9daf08ebc3c5ae2045c09161d598) by lazedo
  * [fix encryption_method_map (#4695)](https://github.com/2600hz/kazoo/commit/7505b7012f17bd400921fbde62d2329c219c3952) by lazedo
  * [do not send empty application-vars (#4697)  fix route_resp_cavs spec  fix route_resp_cavs return](https://github.com/2600hz/kazoo/commit/6448fc8b0b20b133ba4485d9dd959eb98e3908de) by lazedo
  * [KAZOO-5862 check for missing account_id (#4692)](https://github.com/2600hz/kazoo/commit/c0de820279befd72dfd4161ff7df90fbd13cc96b) by lazedo
 -- 2600Hz Official <packages@2600hz.com>  Tue, 27 Mar 2018 02:52:53 +0000
