Update to 0.205001

Upstream changes:
0.205001  2017-07-11 08:03:21-05:00 America/Chicago

    [ BUG FIXES ]
    * GH #1332: Add check for old version of HTTP::XSCookies (Peter Mottram -
      SysPete)
    * GH #1336: Fix warnings on 5.10 and below. (Sawyer X)
    * GH #1347: Add Perl versions 5.22-5.26 and appveyor to Travis-CI
      configuration (Dave Jacoby)

    [ ENHANCEMENTS ]
    * GH #1281: Use Ref::Util in Core for all reference checks (Mickey
      Nasriachi)
    * GH #1338: Add message explaining how to run newly-created application
      (Jonathan Cast)

    [ DOCUMENTATION ]
    * GH #1334: Fix prefix example in Cookbook (Abdullah Diab)
    * GH #1335: Add missing word in request->host docs (Glenn Fowler)
    * GH #1337: Fix link in SEE ALSO section of Dancer2::Core::Types (Stefan
      Hornburg - Racke)
    * GH #1341: Clarify plugin documentation (Stefan Hornburg - Racke)
    * GH #1345, #1351, #1356: Fix password check code example in tutorial
      (Jonathan Cast)
    * GH #1355: Fix typo (Gregor Herrmann)

(wen)