Update to 0.031

Upstream changes:
0.031    2013-08-27 10:03:57 America/New_York

    [FIXED]

    - parent() on paths with internal double dots (e.g. /foo..bar.txt) now works
      correctly

0.030    2013-08-20 16:10:04 America/New_York

    [FIXED]

    - t/zzz-spec.t used getcwd() instead of getdcwd(), which breaks
      on Windows if the build directory isn't on the 'C' drive

0.029    2013-08-19 11:52:24 America/New_York

    [FIXED]

    - On Win32, "C:/" no longer is changed to "C:".  Also, "C:" is
      converted to the absolute path of cwd on the "C:" volume.  UNC paths
      ("//server/share/") now retain their trailing slash to correctly
      distinguish volume and directory paths when split

0.028    2013-08-14 13:12:49 America/New_York

    [ADDED]

    - The 'children()' method now takes an optional regular expression to
      filter the results

(wen)