I ended up using composer, works better than I thought!
//composer.json
//for dev
"require-dev": {
"jquery/jquery-dev": "1.9.1-dev"
},
//or for production
"require": {
"jquery/jquery": "1.9.1",
},
"repositories": [
{
"type": "package",
"package":
{
"name": "jquery/jquery",
"version": "1.9.1",
"dist":
{
"url": "http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js",
"type": "file"
}
}
},
//Other 3rd party libraries
]
Then for twig something like:
{% block javascripts %}
{% javascripts
'%kernel.root_dir%/../vendor/jquery/jquery/jquery.min.js' //for production
'%kernel.root_dir%/../vendor/jquery/jquery-dev/jquery.js' //or debugging
%}
<script type="text/javascript" src="{{ asset_url }}"></script>
{% endjavascripts %}
{% endblock %}