Log Message:
Update to 3.23, provided by Wen Heping in PR 42739.

version 3.23: Fri Jan 29 00:39:27 EST 2010
	- new beta idle_data() method to retrieve untagged messages during idle
	  similar to method suggested by Daniel Richard G
	- added/updated documentation for idle, idle_data, and done
	- rt.cpan.org#53998: fix NTLM auth: call ntlm with challenge string
	  [Dragoslav Mlakar]
	- report the return value from select/_read_more on errors
	- logout() again returns the success/failure of the LOGOUT command
	- set/return error when $response->() returns undef in authenticate()
	- new internal method _load_module() centralizing some 'require' calls
	- localize use $@ in several places to avoid stomping on global val
	- refactor code calling _read_more() to centralize error handling

version 3.22: Thu Jan 21 15:25:54 EST 2010
	- rt.cpan.org#52313: Getting read errors if Fast_io is set to 1
	  [Jukka Huhta]
	- updated Maxttemperrors docs related to EAGAIN handling
	- new starttls() method and Starttls attribute to support STARTTLS
	- update parse_headers to try harder to find UID in fetch response

version 3.21: Tue Sep 22 19:45:13 EDT 2009
	- rt.cpan.org#49691: rewrite of fetch_hash to resolve several issues
	  [Robert Norris]
	  includes new tests via t/fetch_hash.t
	- rt.cpan.org#48980: (enhancement) add support for XLIST extension
	  [Robert Norris]
	- rt.cpan.org#49024: NIL personal name returned by *_addresses methods
	  [Dmitry Bigunyak]
	- rt.cpan.org#49401: IMAPClient expunge fails (unless folder arg used)
	  [Gary Baluha]
	- update/clarify close and expunge documentation a little

version 3.20: Fri Aug 21 17:40:40 EDT 2009
	- added file/tests in t/simple.t
	- added methods Rfc3501_date/Rfc3501_datetime
	  used by deprecated methods Rfc2060_date/Rfc2060_datetime
	  rt.cpan.org#48510: Rfc3501_date/Rfc3501_datetime methods do
	    not exist [sedmonds]
	- login() hack to quote an empty password
	  rt.cpan.org#48107: Cannot LOGIN with empty password [skunk]