Release Summary for 4.1.58
  Changes to 4.1 after version 4.1.57
  * Summary
      - provisioner_v5 crashes when trying to get the label for presence combo key
  * Commits
      - [KAZOO-5837: set label from user doc on provisioner_v5 (#4597)
  Also handle the case when we have to set combo/feature keys to null.](https://github.com/2600hz/kazoo/commit/900be8970de7a30d51de4b4e2826bc0882707275) by icehess
  * [FORUM-9666: formatters don&#039;t exist in SIPEndpoint, don&#039;t look there (#4601)](https://github.com/2600hz/kazoo/commit/755a8856b7303e3d30458f86518de6666220e227) by James Aimonetti
  * [HELP-35052: check doc&#039;s properties (#4593)  * HELP-35052: check doc&#039;s properties    * HELP-35052: fix paren](https://github.com/2600hz/kazoo/commit/7698ae1f80a2366db5377d3ecbd5136828877c24) by James Aimonetti
  * [fix cast for federator_is_consuming so it hits the base listener instead of direct to callback (#4588)](https://github.com/2600hz/kazoo/commit/3d18ab65cdd2b539e071237c2daf7bc712696d73) by Mark Magnusson
 -- 2600Hz Official <packages@2600hz.com>  Fri, 23 Feb 2018 23:27:29 +0000
