Log Message:
py-pexpect: updated to 4.5.0

Version 4.5
* :class:~.spawn and :class:~.fdspawn now have a use_poll parameter.
  If this is True, they will use :func:select.poll instead of :func:select.select.
  poll() allows file descriptors above 1024, but it must be explicitly
  enabled due to compatibility concerns
* The :meth:.pxssh.login method has several new and changed options:
  * The option password_regex allows changing
    the password prompt regex, for servers that include password: in a banner
    before reaching a prompt
  * :meth:~.pxssh.login now allows for setting up SSH tunnels to be requested once
    logged in to the remote server. This option is ssh_tunnels
    The structure should be like this::
          {
            'local': ['2424:localhost:22'],   # Local SSH tunnels
            'remote': ['2525:localhost:22'],  # Remote SSH tunnels
            'dynamic': [8888],                # Dynamic/SOCKS tunnels
          }
  * The option spawn_local_ssh=False allows subsequent logins from the
    remote session and treats the session as if it was local
  * Setting sync_original_prompt=False will prevent changing the prompt to
    something unique, in case the remote server is sensitive to new lines at login
  * If ssh_key=True is passed, the SSH client forces forwarding the authentication
    agent to the remote server instead of providing a key