Add support for prev/next/self links when returning paginated results. To do this: 1) change "data" envelope from an array to a dict 2) move the "data" array to the "collection" property, which is an array of elements in the collection. 3) add @links dict keyed by link relation: self, next, prev. Each relation is an array of dicts with uri and rel keys. In this case there is only one element, but there is nothing preventing a relation from having multiple url's. So this follows the formatting needed for the general case. Relations are present only if it makes sense. So first page has no prev and last page has no next. 4) add @total_size with number of element selected if they were not paginated. Replicates data in X-Count-Total header. Changed index to start at 1. So the first page is page_index 1 and not page_index 0. (So I am no longer surprised when I set page_index to 1 and am missing a bunch of records 8-)). Also a small fixup, json response ends with a newline so printing the data, or using curl makes sure that anything printing after the json output (like shell prompts) is on a new line. Tests added for all cases.

Code
====

Project history is maintained in `CHANGES.txt <https://sourceforge.net/p/roundup/code/ci/tip/tree/CHANGES.txt>`_
file in code repository of Roundup, which can also be viewed online
through SourceForge `web interface <https://sourceforge.net/p/roundup/code/>`_.

Get sources
-----------

Official **read-only access** to Mercurial repository is provided through ::

  hg clone http://hg.code.sf.net/p/roundup/code roundup

**Read/write access** requires SSH password or SSH key
authorization (see `SourceForge.net docs for details
<https://sourceforge.net/p/forge/documentation/Mercurial/>`_) ::

  hg clone ssh://USERNAME@hg.code.sf.net/p/roundup/code roundup

You also need to be added as a Roundup developer for write access - ask
for it on the :doc:`roundup-devel list <contact>`.

Run demo
--------

Roundup doesn't need any dependencies and works out of the box. Demo
is accessible at http://localhost:8917/demo/ by default ::

  cd roundup
  python demo.py

Execute tests
-------------
::

  python run_tests.py

See repository `README.txt <https://sourceforge.net/p/roundup/code/ci/tip/tree/README.txt>`_
for more info.