**Added:**

* <news item>

**Changed:**

* <news item>

**Deprecated:**

* The ``xonsh.proc`` module has been deprecated. Please use the new
  ``xonsh.procs`` subpackage instead. Deprecation warnings related to this
  have been added.

**Removed:**

* <news item>

**Fixed:**

* <news item>

**Security:**

* <news item>
