Applies configuration. Supports the following config vars:
opened_connection - coderef which will be called when a new connection is opened
finish_connection - coderef called on connection close
skip_check_sanity - actions for which sanity checks will not be applied
Returns an empty list.
Adds an action to the list of handlers.
$action as an arrayref, and an
$order in which the action should be applied.
This module using for store server configuration in memory.