**Added:**

* index for history's sqlite-DB
* support passing style from RichCompleter to PTK's Completer
* ``xonsh.cli_utils`` to create cli from functions easily.
* Python API for completer command with ``xonsh.completer`` module functions.


**Changed:**

* <news item>

**Deprecated:**

* <news item>

**Removed:**

* <news item>

**Fixed:**

* <news item>

**Security:**

* <news item>
