  Release Summary for 4.3-84
  [![Generic badge](https://img.shields.io/badge/release_status-building-lightgrey.svg)](https://shields.io/)
  Changes to branch `4.3` after version `4.3.83`.
  * [KZ00-41: handle number delete conflicts](https://github.com/2600hz/kazoo/pull/6285) - _by James Aimonetti_
      Previously, when deleting the number document from the account
      database, a conflict almost always occurred on the first delete
      attempt as the number doc from the number database was used (which
      contained a different _rev).
      However, `knm_phone_number:retry_conflicts/4` only had code for saving
      to the target database (the account). The result is that the number
      doc (now in the &quot;available&quot; state) would be `ensure_saved` to the
      account database, resulting in number listings for the account to both
      show the number belonging to the account *and* show it as &quot;available&quot;,
      an internal state that clients should not see.
      This changeset provides additional context to handle_bulk_change about
      what type of change, &#039;delete&#039; or &#039;save&#039;, and informs retry_conflicts
      of how to proceed.
      Secondly, the likelyhood of conflict is high when saving/deleting from
      the account database as the JSON object used is the number db&#039;s
      version. `try_delete_from` has been updated to use just the number as
      ID and lets kz_datamgr build the tombstone and delete accordingly.
  * [KCRO-7: new filter to find missing keys OR keys with empty values](https://github.com/2600hz/kazoo/pull/6289) - _by Karl Anderson_
      If you want to find a document by missing a value for a parameter the only way currently is to use the filter for a missing key. However, this filter does not emit the document if the key is present but the value is empty/null. There is a has_value filter but no inverse of that. This adds a new query filter missing_value that will return a document if the key is missing OR the value is empty.
  -- 2600Hz Official <packages@2600hz.com> +Wed, 05 Feb 2020 18:43:32 
