Release Summary for 4.2.21
  Changes to 4.2 after version 4.2.20
  * [early handle of subscription timeout](https://github.com/2600hz/kazoo-configs-kamailio/commit/377399a927d75e60a8271838c6c48d7436067dfb) by lazedo
  * [CVE-2018-14767](https://github.com/2600hz/kazoo-configs-kamailio/commit/bc63cbc8492e6fcefa989b19adbef02bfdfa75c6) by lazedo
 -- 2600Hz Official <packages@2600hz.com>  Mon, 06 Aug 2018 22:28:21 +0000
