Release Summary for 4.2.19
  Changes to 4.2 after version 4.2.18
  * [Merge pull request #84 from 2600hz/hamdle-expired-contacts-4.2  handle expired contacts - 4.2](https://github.com/2600hz/kazoo-configs-kamailio/commit/83c224a65e7bdf64233e99376b340b4ea5497039) by bitbashing
  * [Merge pull request #68 from 2600hz/HELP-36142-4.2  handle pusher failover in kamailio- 4.2](https://github.com/2600hz/kazoo-configs-kamailio/commit/c4505a2ff86a09fda44e0e38798c37e723d22850) by bitbashing
  * [handle push failover in kamailio](https://github.com/2600hz/kazoo-configs-kamailio/commit/372b4be6f9926184e2d88fc1d0c745d73458c952) by lazedo
  * [do not send 100 twice](https://github.com/2600hz/kazoo-configs-kamailio/commit/14e7e34c227ed1eeaf7d49cf4e5c66221d41ccb6) by lazedo
  * [100 &quot;waking the dead guy&quot;](https://github.com/2600hz/kazoo-configs-kamailio/commit/892b8333a49afe9cc6214fa4be5555239c9176f4) by lazedo
  * [determine ws/wss](https://github.com/2600hz/kazoo-configs-kamailio/commit/34d3cf5404512397f9f9c7cda6ccfa53fa049479) by lazedo
  * [set reply route](https://github.com/2600hz/kazoo-configs-kamailio/commit/787b920b55d319729403e33b9fea3326d7f4bf73) by lazedo
  * [test X-KAZOO-INVITE-FORMAT before lookup](https://github.com/2600hz/kazoo-configs-kamailio/commit/3708d9403b072bfe71760c28762c859fd8351f57) by lazedo
  * [handle expired contacts](https://github.com/2600hz/kazoo-configs-kamailio/commit/9758ebd7175cd27b735e372c00b8d11a1ff68d50) by lazedo
  * [handle variations of push notification    * invite only  * push_and_invite  * push_only (by exclusion)](https://github.com/2600hz/kazoo-configs-kamailio/commit/b20f044d5f6cf55300df571d7f2af7f5e924bf32) by lazedo
  * [do not process pusher in default](https://github.com/2600hz/kazoo-configs-kamailio/commit/1ffd76677ecf1d37c047287794584b668c219eac) by lazedo
 -- 2600Hz Official <packages@2600hz.com>  Mon, 02 Jul 2018 23:25:51 +0000
