Log Message:
Update to 0.160000

Upstream changes:
0.160000  2015-04-27 00:12:55+02:00 Europe/Amsterdam

    [ BUG FIXES ]
    * GH #868: Fix incorrect access name in $error->throw. (cdmalon)
    * GH #879, #883: Fix version numbering in packaging and tests.
      (Russell Jenkins)
    * File serving (send_file) won't call serializer. (Russell Jenkins)
    * GH #892, #510: Workaround for multiple plugins with hooks.
      (Russell Jenkins, Alberto Sim玫es)
    * GH #558: Remove "prefix" inconsistency with possibly missing \ 
postfixed
      forward slash. (Sawyer X)

    [ DOCUMENTATION ]
    * GH #816, #874 Document session engine changes in migration documentation.
      (Chenchen Zhao)
    * GH #866, #870: Clarify that you cannot forward to a static file, why,
      and two different ways of accomplishing it without forward.
      (Sakshee Vijayvargia)
    * GH #878: Rework example for optional named matching due to operator
      precedence. (Andrew Solomon)
    * GH #844: Document Simple session backend is the default. (Sawyer X)

    [ ENHANCEMENT ]
    * GH #869: Streaming file serving (send_file). (Russell Jenkins)
    * GH #793: "prefix" now supports the path definition spec. (Sawyer X)
    * GH #817, #845: Route spec under a prefix doesn't need to start with
      a slash (but must without a prefix).
      (Sawyer X, Russell Jenkins)
    * GH #871: Use Safe.pm instead of eval with Dancer2::Serializer::Dumper.
      (David Zurborg)
    * GH #880: Reduce and cleanup different logging calls in order to handle
      the stack frames traceback for logging classes. (Russell Jenkins)
    * GH #857, #875: When failing to render in Template::Toolkit, make the
      error reflect it's a TT error, not an internal one.
      (valerycodes)