Add a parameter to setGridWidth method to allow not to propagate resizing to widgets.
Add a parameter to setGridWidth method to allow not to propagate resizing to widgets.

rharriso/gridstack.js,radiolips/gridstack.js,nulle/gridstack.js,rharriso/gridstack.js,troolee/gridstack.js,ltrowan/gridstack.js,nulle/gridstack.js,radiolips/gridstack.js,ltrowan/gridstack.js