Added tests for `is_like_list`
fix tests now that projects association proxy exists
make is_like_list support scalar association proxies

fixes #295
Merge pull request #296 from goodscloud/python-26-test-fix

Python 2.6 requires an index in format strings
Merge pull request #297 from goodscloud/scalar-association-proxies-295

Scalar association proxies
typo on PUT_MANY
Merge pull request #300 from justinwp/patch-3

typo on PUT_MANY
Prepares for version 0.13.0 release.
Bump version number to 0.13.0
Set development version number to 0.14.0-dev
fix jfinkels/flask-restless#304

remove xml renderer stub
Merge pull request #306 from mhils/master

fix #304
Updates version numbers to prepare for 0.13.1 release.
Sign built packages.
Bump version number to 0.13.1
Set development version number to 0.14.0-dev
Only use count() optimization if there are no joins

The count() helper optimization only works if the current query.statement performs no JOINs.
However, if a relation is set to use joined-load, the current query.statement will perform a
join, and the count() helper will return a number that is the number of objects found for
the current endpoint *multiplied* by the number of objects in the joined-loaded relation.
allow disabling deep results per-request

originally by @johaness
allow fine grained control of relations included in output
bump to 1.current-upstream-version