Do you have a plan in the future to add a extension where a user can freely resize their columns? or there's an issue why there's still no extension for that?
No. At this time I've no plans to develop such an extension. Other aspects of DataTables, if feel, need to take priority. That's not to stop anyone else from developing one if they want to though! DataTables is open source.
You can try the third arty colresize plugin. Not sure if it works with the latest code.
It looks like you're new here. If you want to get involved, click one of these buttons!
DataTables designed and created by SpryMedia Ltd.
SpryMedia Ltd is registered in Scotland, company no. SC456502.