The last published version was in https://pypi.python.org/pypi/Flask-RESTful Dec 2015.. Arguably there are not many changes.. but still it's good idea to update once in a while :)
I love python,this project which I want to maintenance.
Please @joshfriend, it seems you have merged some pull request, so would it be possible to release to pypi ? Else what's the problem ?
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https://pypi.python.org/pypi/Flask-RESTful/0.3.6