Log Message:
Update p5-WebService-Google-Reader to 0.20.

Changes from previous:
0.20  Sun Sep 18 22:02:11 UTC 2011
    - Added fix for XML::Atom bug.

0.19  Wed May 18 02:29:57 UTC 2011
    - Fixed handling of expired tokens. (RT #68245)
    - Added response method.
0.18  Thu Apr 28 15:48:20 UTC 2011
    - Fixed corner case in 'more' method to prevent an infinite loop.

0.17  Wed Mar 30 00:26:09 UTC 2011
    - Required newer LWP with better HTTPS support.

0.16  Sun Mar 20 23:43:46 UTC 2011
    - Added fix for google alert feeds. (ayanokouz)
    - Added another example script.

0.15  Wed Mar  9 17:46:14 UTC 2011
    - Updated LWP usage to accomodate a change to the default behaviour
      (HTTPS requests now verify the hostname matches the issued certificate).
    - Explicitly set the default sort order of entries to desc, as documented.

0.14  Mon Nov  1 02:51:37 UTC 2010
    - Fixed search feeds.
    - Fixed debug and compress constructor options.
    - Added support for "liking" items.
    - Updated some methods to accept both lists and array references.

0.13  Tue Oct 26 20:51:30 UTC 2010
    - Fixed 'more' method to prevent an infinite loop.    - Substituted \ 
deprecated API url.
    - Added another example script- marks dead craigslist posts as read.
    - Updated author tests.